From: Buns in My Oven
One box yellow cake mix
1/2 cup peanut butter
eggs, as called for on box
melted butter, to replace oil as called for on box
milk, to replace the water as called for on box
1 tsp vanilla
2 cups chocolate chips
Preheat oven to 350 degrees. Add all of the ingredients, except for the chocolate chips to a large mixing bowl or stand mixer and mix until well combined. Stir in the chocolate chips. Pour batter into greased 13x9 pan and bake as directed on the box.
Thumbs up! Yummy and incredibly easy. Just the kind of quick dessert I like!