Double Chocolate Crumble Bars

1/2 cup butter or marg
3/4 cup sugar
2 eggs
1 tsp. vanilla
3/4 cup flour
1 tbsp. cocoa
1/2 tsp. baking powder
2 cups mini marshmallows
1 cup chocolate chips
1 cup peanut butter
1 1/2 cup rice krispies

Cream first four ingredients together.  Stir in flour, baking powder and cocoa.  Spread in greased 9x13 pan and bake at 350 for 25-20 minutes.  Spread marshmallows over top and return to oven for 2 minutes.  Cool.  Melt chocolate chips and peanut butter together.  Stir in cereal and spread over marshmallows.  Chill