1/2 c. butter
1/2 c. cocoa
1 c. sugar
1 egg
1/2 c. flour
1/4 c. buttermilk
1 tsp. vanilla
1 c. miniature marshmallows
1 c. walnuts, chopped
1 c. chocolate chips

Preheat oven to 350 degrees. Grease 8 inch pan. Melt butter and sugar on low. Stir. Remove from heat; add sugar, egg, flour, buttermilk, and vanilla. Mix and spread in pan. Bake 25 minutes (until center is dry). Sprinkle with marshmallows, walnuts, and chips. Return to oven for 3-5 minutes until they start melting. Cool before cutting.