Rocky Road Brownies
["1 (6 oz.) pkg. chocolate chips", "1/2 c. margarine", "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 margarine over low heat until melted. Cool."]
["chocolate chips", "margarine", "flour", "sugar", "baking powder", "vanilla", "salt", "eggs", "marshmallows", "walnuts"]