1 (6 oz.) pkg. butterscotch chips
1/4 c. butter
3/4 c. flour
1/3 c. brown sugar
1 tsp. baking powder
1/4 tsp. salt
1/2 tsp. vanilla
1 egg
1 (6 oz.) pkg. chocolate chips
1 c. miniature marshmallows
1/2 c. chopped nuts

In a large saucepan, melt butter and butterscotch chips over low heat; stir constantly to prevent scorching. Remove from heat and cool to lukewarm. Stir in flour, brown sugar, baking powder, salt, vanilla and egg blending well. Fold in chocolate chips, marshmallows and nuts. Spread into a greased 8 inch square pan. Bake at 350 degrees for 20 to 25 minutes; do not overbake. The center will still be soft when the brownies are removed from the oven.