Disappearing Marshmallow Brownies
["1/2 c. butterscotch chips", "1/4 c. margarine", "3/4 c. flour", "1 tsp. baking powder", "1/3 c. brown sugar", "1/4 tsp. salt", "1 tsp. vanilla", "1 egg", "1 c. miniature marshmallows", "1 c. chocolate chips"]
["Grease bottom and sides of a 9-inch square pan.", "Heat oven to 350\u00b0.", "Melt the butterscotch chips and margarine in a saucepan. Stir constantly until melted and then cool. Add the flour, baking powder, brown sugar, salt, vanilla and egg.", "Mix well and stir in the marshmallows and chocolate chips.", "Spread in pan and bake for 20 to 25 minutes."]
["butterscotch chips", "margarine", "flour", "baking powder", "brown sugar", "salt", "vanilla", "egg", "marshmallows", "chocolate chips"]