1 (18.5 oz.) pkg. yellow cake mix
3 eggs
1 c. plain yogurt
1 (20 oz.) can apple pie filling
3 tbsp. sugar
1 tbsp. cinnamon
2 tbsp. flour

In a large mixing bowl combine cake mix, eggs, and yogurt. Beat 3 minutes. Spread batter into an oiled and floured 9 x 13 cake pan. Arrange pie filling over batter. Combine cinnamon, sugar, and flour. Sprinkle on top of cake. Bake at 350 degrees for 40-45 minutes. Best served warm.