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    Home » Recipes » Main Dishes

    Eggplant Polenta Casserole

    Published: Jun 20, 2023 Modified: Jun 20, 2023 by Kristin King / This post may contain affiliate links

    Jump to Recipe | Pin Recipe
    Side close up shot of polenta lasagna in a clear baking dish garnished with basil on a wooden table.
    Side shot of eggplant polenta lasagna garnished with basil on a blue and white plate on a wooden surface with silverware in the background.
    Side shot of eggplant polenta lasagna garnished with basil on a white and blue plate on a wooden table.

    Make this Eggplant Polenta Casserole for a vegetarian lasagna dish that uses polenta instead of noodles! With eggplant and mushrooms, there’s additional veggie goodness of a tasty and nutritious dish.

    All you need are 15 minutes of prep to make this fantastic eggplant casserole. For a lasagna-like dish with a yummy twist, this eggplant polenta lasagna is a delicious option!

    Side shot of eggplant polenta lasagna garnished with basil on a white and blue plate on a wooden table.
    The whole family will love this flavorful and hearty eggplant polenta lasagna!
    Jump to:
    • 💚 Why You'll Love This Recipe
    • 🧂 Ingredients Needed
    • 🔪 Instructions
    • ❔ FAQs
    • 💭 Expert Tips and Tricks
    • 💡 Substitutions and Variations
    • 🔊 What readers are saying...
    • 🥫 Storage and Reheating
    • 🍴 What To Serve With This Dish
    • ✔️ More Casserole Recipes You'll Love
    • 📋 Recipe Card
    • 💬 Reviews and Comments

    💚 Why You'll Love This Recipe

    One day I was working on a recipe for a lasagna with eggplant, and it hit me that the polenta would make a great addition to that dish! So I put it all together, and it was a huge hit with the family.

    The polenta added a nice texture and mild corn flavor that perfectly complimented the eggplant and mushroom flavors and did not overpower the cheese and sauce.

    My favorite part of the dish, however, was that I totally skipped the hassle of dealing with lasagna noodles!

    If you like putting fun twists on classic lasagna, you'll also love this Vegetarian Fiesta Lasagna, inspired by Mexican flavors!

    🧂 Ingredients Needed

    Overhead shot of ingredients - mushrooms, parmesan cheese, egg, polenta, shredded mozzarella cheese, marinara sauce, ricotta cheese, and eggplant.
    With only a few simple ingredients, you will love making this delicious eggplant polenta lasagna!
    • eggplant - provides lots of nutrition and a sweet, vegetal bitterness.
    • polenta - using a tube of prepared polenta is a great way to cut down on prep time.
    • ricotta cheese - this classic lasagna ingredient creates creamy, cheesy layers between the veggies and sauce.
    • Parmesan cheese - for extra salty and cheesy flavor.
    • egg - helps the ricotta layers take on a bit more substance so they bind together.
    • sliced mushrooms - provide some additional earthy flavor and nutrition.
    • marinara sauce - another important lasagna ingredient that adds some acidity and delicious tomato flavor.
    • shredded Mozzarella - works as a delicious topping that melts while baking.

    🔪 Instructions

    Four panel grid of process shots 1-4 - prepping ingredients and combining cheese mixture.
    Gather your ingredients and start making this quick eggplant polenta lasagna!
    1. Cut eggplant into rounds and spray with olive oil, then roast at 450 degrees F for about 20 to 25 minutes.
    2. Cook the mushrooms in the microwave for about 5 minutes or until softened, stirring halfway through.
    3. Meanwhile, cut the polenta into rounds.
    4. Combine the ricotta cheese with Parmesan and the egg in a medium bowl.
    Four panel grid of process shots 5-8 - assembling lasagna by layering ingredients in a baking dish.
    Start layering your delicious ingredients for this eggplant casserole!
    1. Spread a layer of marinara sauce into the bottom of a baking dish, then top with a layer of polenta rounds.
    2. Top the polenta with half of the ricotta mixture.
    3. Add the roasted eggplant on top, then distribute the mushrooms evenly.
    4. Sprinkle with mozzarella cheese.
    Two panel grid of process shots 9-10 - covering dish with aluminum foil and baking in the oven.
    After assembling, throw your eggplant casserole in the oven and let it bake!
    1. Repeat the process, layering with polenta, ricotta mixture, eggplant, mushrooms, and sauce.
    2. Cover with foil and bake for 30 minutes. Remove foil, add a final layer of mozzarella cheese, then bake an additional 15 minutes until the cheese is nice and melty and the casserole is heated through.

    ❔ FAQs

    Should I soak eggplant before cooking?

    If you want to prevent your eggplant for absorbing excess oil, soaking before cooking is a great way to achieve that. Otherwise, soaking isn't a necessary prerequisite to cook eggplant!

    Do I have to peel eggplant for eggplant casserole?

    Ultimately this comes down to personal preference. Some people aren't fans of eggplant skin, in which case you can peel it before slicing. But it can be left on just as well.

    What is polenta?

    This dish is made with cornmeal and can be served in a variety of ways. A common way of eating polenta is as a kind of hot porridge. It can also be solidified and then grilled, fried, or baked (like in this Eggplant Polenta Casserole recipe!)

    Side close up shot of polenta lasagna in a clear baking dish garnished with basil on a wooden table.
    Perfect for busy weeknights, this nutritious and flavorful eggplant casserole only requires fifteen minutes of prep work!

    💭 Expert Tips and Tricks

    • Be sure to pay attention while the eggplant is roasting. The thinner slices may cook a bit faster. Do your best to cut them evenly for best results!
    • Also, be sure to spread out your eggplant rounds while baking so they can cook evenly. Don't drench them in oil, just a light coating for some browning on the outside.
    • Use only as much sauce as necessary to avoid a soggy Eggplant Polenta Casserole.

    📌 Make this eggplant polenta lasagna for a fun and delicious twist on the classic dish that has a kick of added nutrition! The whole family will love this hearty and comforting dinner.

    💡 Substitutions and Variations

    • The mushrooms can easily be omitted if you prefer to leave them out.
    • Extra flavor is easy to achieve with Italian seasoning or a homemade spaghetti seasoning.
    • Feel free to add more cheese if you like!
    • Instead of ricotta cheese, you could substitute mascarpone, cream cheese, cottage cheese, or sour cream. Ricotta will provide the most authentic lasagna flavor though!

    🔊 What readers are saying...

    "I made the full recipe Tuesday night and its gone tonight. This is a fantastic recipe and I’ll definitely be making it again! It tastes great on its own! Lots of flavor! Tonight I added a bit of garlic powder and crushed red pepper and I think it suits my taste buds a little more. I’m going to experiment around with the recipe a bit but the natural flavors on their own definitely impressed me (especially since I’m not a huge fan of eggplant). GREAT WORK!"

    - Winona

    🥫 Storage and Reheating

    Store leftover Eggplant Polenta Casserole covered in the fridge. I recommend transferring to an airtight container of some kind if possible. The casserole should last 3-4 days if properly stored.

    You can also freeze your leftovers or even an entire prepared casserole to be reheated in the oven at a later time. You'll want to let it thaw in the fridge for a bit before baking again.

    🍴 What To Serve With This Dish

    Looking for the perfect side dish to serve alongside your eggplant and polenta casserole? Pair it with Air Fryer Broccoli, Air Fryer Roasted Carrots, these super tasty Oven Fried Crispy Green Beans or a batch of Crispy Air Fryer Brussels Sprouts.

    ✔️ More Casserole Recipes You'll Love

    • Corn Dog Casserole - Transport yourself back to the county fairs of your childhood with this yummy and healthier take on corn dogs!
    • Cheesy Tater Tot Casserole - Whether you need a nice brunch or a hearty breakfast for dinner, this tater tot casserole will hit the spot.
    • Crock Pot French Toast Casserole -
    • Cowboy Cornbread Casserole - You'll adore this tasty Casserole from Bowl Me Over, inspired by Southwestern Flavors you know and love!
    Side angled shot of eggplant polenta lasagna garnished with basil on a white and blue plate on a wooden table with silverware in the background.
    With only fifteen minutes of prep work and minimal clean up, you will want to keep this eggplant casserole recipe in your dinner rotation!

    Vegetarian Polenta Lasagna

    Love this recipe? Awesome! Snap a photo and tag me on Instagram. You can find me at DizzyBusyandHungry or #dizzybusyandhungry!

    ⭐ Did you make this recipe? Please give it a star rating below! ⭐

    📋 Recipe Card

    Side shot of eggplant polenta lasagna garnished with basil on a white and blue plate on a wooden table.

    Eggplant Polenta Casserole

    Recipe Author: Kristin
    This Eggplant Polenta Casserole is made with polenta instead of noodles and eggplant & mushrooms for additional veggie goodness.
    4.97 from 64 votes
    Print Recipe Share by Email Bookmark Saved!
    Prep Time 15 minutes mins
    Cook Time 1 hour hr 15 minutes mins
    Total Time 1 hour hr 30 minutes mins
    Course Entree
    Cuisine American
    Servings 8
    Calories 312 kcal

    Ingredients
     

    • 1 large eggplant (sliced into rounds about ¼ inch thick)
    • 18 ounces prepared polenta (1 tube)
    • 16 ounces ricotta cheese (1 container)
    • ¼ cup Parmesan cheese
    • 1 egg
    • 16 ounces sliced mushrooms
    • 24 ounces marinara sauce (1 jar)
    • 12 ounces shredded mozzarella cheese
    US Customary - Metric
    Prevent your screen from going dark

    Instructions
     

    • Preheat oven to 450 degrees F (230 degrees C).
    • Spray the eggplant rounds with a little olive oil spray, then place on a baking sheet and roast in the oven for about 20-25 minutes.
      1 large eggplant
    • While the eggplant is roasting, slice the polenta into rounds.
      18 ounces prepared polenta
    • In a medium bowl combine the ricotta cheese, Parmesan cheese, and egg.
      16 ounces ricotta cheese, ¼ cup Parmesan cheese, 1 egg
    • Place the mushrooms in a microwave-safe dish and heat about 5 minutes on high, stirring halfway through, to soften them slightly.
      16 ounces sliced mushrooms
    • Once the eggplant is done, remove from the oven and turn it down to 350 degrees F (175 degrees C).
    • Spread a little of the marinara sauce on the bottom of a 9x13 casserole pan. Place half of the polenta rounds on top of the sauce.
      24 ounces marinara sauce
    • Spread half of the ricotta mixture on top of the polenta.
    • Place half of the eggplant rounds on top of the ricotta mixture. Distribute half of the mushrooms on top of the eggplant.
    • Sprinkle half of the mozzarella cheese on top of the mushrooms, then spread half of the remaining marinara on top of the cheese.
      12 ounces shredded mozzarella cheese
    • Then repeat layers: place the remaining polenta rounds, ricotta mixture, eggplant, mushrooms, and sauce.
    • Cover the dish with aluminum foil and bake for 30 minutes, then remove the foil, sprinkle the rest of the mozzarella, and bake for about 15 additional minutes.

    Notes

    • Keep an eye on the eggplant while it's roasting. Some thinner slices might start to burn before the thicker slices are cooked.
    • If your family doesn't like mushrooms, simply omit them.
    • For extra flavor, stir some Italian seasoning or spaghetti seasoning into the sauce (start with 1 teaspoon and add more as needed). If you don't have these seasoning mixes handy, check out my homemade Italian seasoning and spaghetti seasoning recipes!
    • Use more shredded cheese if desired.

    Video

    Nutrition

    Calories: 312kcal | Carbohydrates: 21g | Protein: 23g | Fat: 16g | Saturated Fat: 10g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 0.003g | Cholesterol: 79mg | Sodium: 777mg | Potassium: 683mg | Fiber: 4g | Sugar: 7g | Vitamin A: 912IU | Vitamin C: 8mg | Calcium: 511mg | Iron: 2mg

    Nutritional information is an estimate. The nutritional values for your final dish may vary based on measuring differences and products used.

    Want to make cooking even easier?Sign up here to receive FREE DBH exclusive content, including my favorite kitchen shortcuts and hacks, and unlock access to the DBH resource library with many other free downloads!

    Update Notes: This post was originally published in July 2014, and was republished with tips, step by step photos, and a recipe change in June 2023.

    Thanks so much for reading! I also invite you to follow me on FACEBOOK, PINTEREST, or INSTAGRAM to keep up with what's going on in my kitchen.

    And you might want to check out my Dizzy Busy and Hungry store on Amazon for a whole bunch of great kitchen products I love!

    Happy cooking!

    Close up of a signature of Kristin.

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      Recipe Rating




    1. Whitney

      June 20, 2023 at 7:44 pm

      5 stars
      I feel like eggplants only purpose was to be made with lasagna, it's soo good together! I am looking forward to adding the polenta!

      Reply
    2. Sara Welch

      June 20, 2023 at 7:08 pm

      5 stars
      Enjoyed this for dinner last night and it was a savory success! Easy, hearty and delicious; a new family favorite recipe, indeed!

      Reply
    3. Andrea

      June 20, 2023 at 7:01 pm

      5 stars
      I am loving all the flavors and textures in this fabulous eggplant polenta lasagna. It will be a big hit in my household.

      Reply
    4. Heidy

      June 20, 2023 at 6:56 pm

      5 stars
      Wow, I loved this Eggplant Polenta Casserole! It was a massive hit with the family. I loved the flavors and textures. Great combo!

      Reply
    5. Cara Campbell

      June 20, 2023 at 5:35 pm

      5 stars
      I love polenta, and I've definitely never seen it used in this way! On rotation now for sure!

      Reply
    6. Sandy

      April 17, 2023 at 7:29 pm

      5 stars
      The way you wrote the instructions for the recipe is brilliant. I’ve never seen anyone include the amount of the ingredient into the instructions. Can’t wait to make this recipe, I’ve been looking for a while to make some thing that included ricotta. Probably going to roast the sliced eggplant and polenta before I put the dish together.

      Reply
      • Kristin King

        April 17, 2023 at 7:33 pm

        So glad you find the recipe format helpful! And I hope you enjoy this recipe. I actually have it planned for my family later this week too!

        Reply
    7. alison

      July 18, 2018 at 6:12 am

      I'm living in Vietnam at the moment, with no access to pre-made polenta, but I do have a package of dry. Can I assume that the pre-made polenta is just that, someone else made and it's like "day old"? So therefor, I can just make some polenta and then the next day use it in your lasagna recipe? Thanks!

      Reply
      • Kristin

        July 18, 2018 at 2:03 pm

        I think that is totally worth a shot! Good luck and let me know how it turns out. 🙂 Thanks for stopping by!

        Reply
    8. Teresa

      March 06, 2018 at 9:02 pm

      Hi Kristin, I'm featuring your lasagna recipe on my blog this week on Party in Your PJ's! Thank you for linking up!

      Reply
    9. Nikki@SoulfullyMade

      March 06, 2018 at 6:54 pm

      This looks so delicious! I love polenta and eggplant! Perfect combination.

      Reply
    10. Teresa

      March 05, 2018 at 10:22 pm

      I've never tried polenta, but this looks and sounds so good that I think I will! Thank you for sharing it with us at Party in Your PJ's.

      Reply
    « Older Comments

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    👋 Hey there, I'm Kristin! As a full-time working wife and mom, my life is such a whirlwind, it makes me dizzy sometimes! So I have been working to develop quick, easy, family-friendly recipes for 20+ years, and this site is where I share them with you! Happy cooking!

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