Butterscotch Brownies

1 /4 cup butter
1 C brown sugar
1 egg
1 tsp baking powder
1 C flour
1 tsp vanilla
1 /2 tsp salt
1 /2 C nuts

Melt butter in a pan over medium heat.  Add brown sugar and stir for one to two minutes, until it has a thick, peanut butter-like consistency.  Let cool, then stir in beaten egg and vanilla, followed by flour, salt, and baking powder.  Once combined, stir in nuts.  Spread the batter into a greased 9 × 13-inch pan and bake at 350 degrees for 20-25 minutes, or until edges begin to brown and toothpick inserted in center comes out clean.  Cut into squares while warm and sprinkle with powdered sugar.  Place leftovers in air-tight container.