Combine the peanut butter, sugar, and egg in a bowl.
1 cup peanut butter, 1 cup sugar, 1 egg
Line a baking sheet with parchment paper, then use a cookie scoop to scoop out the dough and place on the parchment paper.
With the back of a spoon or a spatula, flatten the balls of dough and shape them into roughly rectangular ovals.
Place in the oven and bake for about 15 minutes until the surface of the cookies is no longer shiny and the edges are lightly browned. Cool on the cookie sheet for about 2 minutes and then transfer to a wire rack.
When the cookies are completely cool, melt the semi-sweet morsels in the microwave by microwaving on 50% power, 30 seconds at a time, stirring in between. Place about a tablespoon of melted chocolate on each cookie, and spread it evenly over each, almost to the edges.
12 oz semi-sweet morsels
Place the candy eyes on the chocolate and press gently so that they stick, then freeze the cookies for about 30 minutes or until the chocolate sets.
24 candy eyes
Melt the white chocolate chips using the same technique as the semi-sweet. When the white chocolate is melted, spoon it into a candy decorating bag.
12 oz white chocolate chips
Remove the cookies from the freezer, and, working quickly, pipe bands of white chocolate over the cookies to look like mummy wrappings. Wait for the chocolate to harden at room temperature or place in the refrigerator to speed up the process.
Video
Notes
If you don't have a cookie scoop, use roughly 1 ½ - 2 tablespoons of cookie dough per cookie.
Sometimes I have trouble melting the chocolate chips with the microwave method, especially the white chocolate chips. If you have a double boiler, that really works best. Or you can use white candy melts which also work well even in the microwave.
If you don't have candy decorating bags, you can use a sturdy plastic bag (like a freezer bad), fill it with the melted white chocolate, and cut the corner to pipe the bands of white chocolate onto the cookies.
You can substitute white decorating icing for the white chocolate. Often you can find the decorating icing already packaged in decorating bags, which makes it super easy. Just make sure it comes with a flat tip so you can pipe on strips of icing for the mummy wrapping!