• 3/4 cup butter
• 1-1/2 cups sugar
• 3 eggs
• 1 tsp vanilla extract
• 1-1/3 cups all purpose flour
• 3 tbsp baking cocoa
• 1/2 tsp baking powder
• 1/2 tsp salt
• 1/2 cup chopped nuts, optional (I omitted these)
• 4 cups miniature marshmallows
• Topping:
• 1-1/3 cup chocolate chips
• 1 cup peanut butter (1 1/2 cups peanut butter)
• 3 tbsp butter
• 2 cups crisp rice cereal

1. In a mixing bowl, cream butter and sugar.
2. Add eggs and vanilla; beat until fluffy.
3. Combine flour, cocoa, baking powder and salt; add to creamed mixture.
4. Stir in nuts if desired.
5. Spread in a greased 15 x 10 x 1" pan.
6. Bake at 350F for 15-18 minutes.
7. Sprinkle marshmallows evenly over cake; return to oven for 2-3 minutes.
8. Using a knife dipped in water, spread the melted marshmallows evenly over cake.
9. Cool. (I did not spread them, when I took them out of the oven they seemed fine the way they were. )
10. For topping, combine chocolate chips, peanut butter and butter in a small saucepan.
11. Cook over low heat, stirring constantly, until melted and well blended.
12. Remove from heat; stir in cereal.
13. Immediately spread over bars.
14. Chill.
15. Yield: 3 dozen

When I saw these on Good Eats 'n Treats I knew I had to try them. They are worth making. Next time I will add more peanut butter to them. http://canadianbakertoo.blogspot.com/