1 (6 oz.) pkg. chocolate chips
1/2 c. butter
1 1/2 c. flour
1 c. sugar
1/2 tsp. baking powder
1/2 tsp. vanilla
1/4 tsp. salt
2 eggs
2 c. mini marshmallows
1 c. chopped walnuts

In saucepan, heat 1/2 cup chocolate chips and butter over low heat until melted. Cool.

In large mixing bowl, mix flour, sugar, baking powder, vanilla, salt, eggs and melted chocolate and butter. (In order given.) Spread mixture in ungreased 9 x 9-inch baking pan.

Bake at 350°F for 15 minutes.

Remove from oven and sprinkle with marshmallows, walnuts and other 1/2 cup chocolate chips. Put back in oven and bake 10 to 15 minutes longer until marshmallows are golden brown.