1 pkg. Betty Crocker Super Moist yellow cake mix
1/2 c. butter, softened
1/4 c. packed brown sugar
1 tsp. ground cinnamon
2 lg. cooking apples or firm pears, pared and thinly sliced
1 c. sour cream or low-fat sour cream
1 egg or 1/4 c. frozen, thawed, cholesterol-free egg product

Heat oven to 350 degrees. Mix cake mix (dry), butter, brown sugar, and cinnamon until crumbly. Reserve 2/3 cup crumbly mixture. Press remaining crumbly mixture in bottom of ungreased rectangular pan, 13 x 9 x 2 inches. Arrange apple slices on mixture in pan. Beat sour cream and egg until blended. Spread over apples. Sprinkle with reserved crumbly mixture. Bake 25 to 30 minutes or until topping is light golden brown. Cool. 16 servings.