This crunchy, peanut-y cake is quick, easy and stores well.
1 Preheat oven to 350 degrees F (175 degrees C). Grease and flour one 13×9 inch pan.
2 In a mixing bowl beat cake mix, peanut butter, and brown sugar on low speed until crumbly. Set aside 1/2 cup of mixture. To the remainder add water, eggs, and oil, and beat on high for 2 minutes. Stir in 1/4 cup each of the chocolate chips and the peanut butter chips. Pour into prepared pan.
3 Combine peanuts, remainder of dough mix, and rest of the chips; sprinkle over batter.
4 Bake at 350 degrees F (175 degrees C) for 30 to 40 minutes. Cool completely.