Preheat the oven to 350°F (175°C). Grease and line a standard loaf pan with parchment paper.
In a large bowl, beat the butter and sugar together until light and fluffy.
1 cup unsalted butter, softened, 1 ¾ cups granulated sugar
Add the eggs one at a time, beating well after each addition.
4 large eggs, room temperature
In a separate bowl, whisk together the flour, baking powder, and salt. Then, add the dry ingredients to the batter alternately with the milk, mixing just until combined.
2 cups all-purpose flour, ½ teaspoon baking powder, ½ teaspoon salt, ½ cup whole milk
Stir in the lemon zest, lemon juice, and vanilla extract.
2 lemons' worth of zest, ¼ cup fresh lemon juice, 1 teaspoon vanilla extract
Pour the batter into the prepared pan and smooth the top. Bake for 50–60 minutes, until a toothpick inserted into the center comes out clean. Cool the cake in the pan for 15 minutes, then transfer to a wire rack to cool completely.
In a small bowl, whisk together the powdered sugar and lemon juice until smooth and pourable.
1 cup powdered sugar, 2 tablespoons fresh lemon juice
Drizzle the glaze over the cooled cake.
Garnish with lemon slices or extra lemon zest if desired before slicing and serving.
Notes
Prep Tips:
Make sure the butter and eggs are at room temperature for the smoothest batter and best texture.
Mix the batter just until combined once the flour is added. This helps to keep the cake tender instead of dense.
Fresh lemon juice and zest give the brightest flavor, though bottled lemon juice can work in a pinch.
Let the cake cool completely before glazing so the glaze stays nicely on top instead of soaking in.
Variations:
Make it a bundt! Bake the batter in a bundt pan instead of a loaf pan and begin checking for doneness around 55–65 minutes.
Add blueberries or raspberries to the batter.
Swap the lemon glaze for a dusting of powdered sugar.
Add a little almond extract along with the vanilla.
Serving Suggestions:
Top each serving with whipped cream and fresh berries for a more elevated presentation.
Slice the cake and serve the slices slightly chilled on warm days for a refreshing dessert.
Storage:
Store tightly wrapped at room temperature for up to 2 days. Or store in an airtight container in the refrigerator for up to 5 days.
You can freeze an unglazed loaf or individual slices for up to 2 months. Thaw and glaze before serving.