1 c. brown sugar
3/4 c. all-purpose flour
1 tsp. baking powder
1 tsp. cinnamon
1/2 tsp. salt
2 eggs
1/2 c. peanut butter
1/3 c. milk
1 tsp. vanilla
1 med. apple, cored, cut into thin slices
1/2-3/4 c. sifted powdered sugar

Mix together sugar, flour, baking powder, cinnamon and salt. Add eggs, peanut butter, milk and vanilla. Beat with mixer on low speed until combined. Beat on high for 2 minutes. Spread mixture in a well greased 9"x9"x2" pan. Lightly press apple slices, peel side up, into mixture, spacing evenly. Bake at 350 degrees for 30 minutes. Dust mixture with powdered sugar.