Instructions

1. In a large mixing bowl, combine the sugar, brown sugar, cocoa powder, melted butter, and vegetable oil. Beat for about 2 minutes, then add egg and vanilla extract.
2. Add the flour, baking powder, and salt to the butter mixture, stirring just until combined.
3. Chill dough for about 30 minutes.
4. Preheat oven to 350 degrees F. Line a cookie sheet with parchment paper or silicone baking mat.
5. Remove cookie dough from refrigerator and roll dough into 12 equal sized cookie dough balls. Place on baking sheet.
6. Flatten cookie dough balls to ¼ inch thickness. Bake for 10-12 minutes.
7. While the cookies bake, make the filling by beating the peanut butter, powdered sugar, and butter together until well combined. Roll into 12 peanut butter balls. Refrigerate for at least 5 minutes, until ready to use.
8. Remove cookies from the oven and use a spoon to make an indent in the center of each cookie (immediately).
9. Cool the cookies for about 5 minutes, then place a peanut butter ball into each indentation.
10. Melt chocolate chips (either in the microwave or double boiler). Spoon over peanut butter. Allow to set.