Butterscotch Squares without coffee

1 cup all-purpose flour 1/2 teaspoon baking powder 1/3 cup butter , melted and cooled slightly 1 cup packed light brown sugar 1 egg 1 teaspoon vanilla extract[...]

1 cup butter , softened, divided 2 cups brown sugar , packed 2 eggs 2 teaspoons vanilla 2 1/2 cups all-purpose flour 1 teaspoon baking soda 3 cups Robin Hood[...]