3 tbsp. sugar
1/4 c. chopped walnuts
1 tsp. cinnamon

CAKE:

1/3 c. butter
3/4 c. sugar
2 egg whites
1 c. plain non-fat yogurt
1 c. all-purpose flour
1 c. whole wheat flour
1 tsp. baking soda
1 tsp. baking powder
2 med. apples, cored & diced

Preheat oven to 375 degrees. Grease 10 inch tube pan or 12 cup Bundt pan. Combine topping ingredients; set aside.

Cream butter and sugar; add egg whites; beat well. Blend in yogurt until just mixed.

In separate bowl combine flours, baking soda and baking powder. Mix dry ingredients into yogurt mixture. Mixture will be stiff. Fold diced apples into batter. Spread 1/2 of batter in pan. Sprinkle with 1/2 of topping. Spread remaining batter in pan. Sprinkle with remaining topping. Bake 45 minutes at 375 degrees or until toothpick inserted in center comes out clean. Yield: 12 servings.