Almond Butterscotch Brownies

1 c. butter, melted
3 c. brown sugar
2 t. vanilla
1 t. almond flavoring
3 c. flour
2 t. baking powder
4 eggs
½ c. chopped walnuts, optional
　
Combine ingredients; pour batter into a greased 9X12 inch baking pan. Bake at 350 degrees for 30 minutes or until a toothpick inserted in center comes out clean. Cool, cut into bars.

Variations:
1. Substitute maple flavoring for almond.
2. Sprinkle 1 c. butterscotch chips & 1 c. chocolate chips over top before baking; omit almond flavoring.