Preheat the oven to 350°F:  Lightly butter and flour an 8x8-inch pan.

 

Make the batter: Whisk together the melted butter and sugar in a bowl. Add the egg and vanilla extract and whisk to combine. Add the flour, baking soda, baking powder, and salt, and mix all together. Add the butterscotch chips or other mix-ins (up to 1 cup total).

Pour into the pan and spread evenly. Bake for 18 to 25 minutes or until a tester inserted into the center comes out clean. 

While still warm place peeps in three rows. Place bake in for a few minutes to light toast the peeps. Remove and allow to cool.

Place white chocolate chips in a microwave-safe bowl along with the coconut oil. Melt in 30-second intervals. Drizzle over the peeps and allow to cool.

Cut into squares or rectangles and serve.

Store blondies in an airtight container at room temperature for up to 1 week.