1 (6 oz.) pkg. chocolate chips
1/2 c. butter
1 1/2 c. all-purpose flour
1 c. sugar
1/2 tsp. baking powder
1/2 tsp. vanilla
1/4 tsp. salt
2 eggs
2 c. miniature marshmallows
1 c. chopped nuts

Melt 1/2 of the chips and the butter over low heat; cool. Mix flour, sugar, baking powder, vanilla, salt, eggs and chocolate mixture. Spread in ungreased 9 x 9 x 2 inch pan. Bake 15 minutes. Sprinkle with marshmallows, nuts and remaining chips. Bake until marshmallows are golden brown and toothpick inserted in center comes out clean; 15 to 20 minutes. Cool.