Butterscotch Squares

1/4 cup butter

1 cup brown sugar

1 egg

1/2 cup chopped nuts

1 teaspoon vanilla

2/3 cup flour

1/2 teaspoon salt

1 teaspoon baking powder

Melt butter then add brown sugar, unbeaten egg, nuts and vanilla. Mix and sift dry ingredients and add to first mixture. Bake in a shallow buttered pan in a moderate oven, 350 degrees. for 30 minutes. Cool on a wire rack.