This is a wonderful recipe from the cook book Fast Fixes with Mixes. It sounds a little odd, but it's great, and easy.
1 package yellow cake mix
3 cups sliced and peeled tart apples
1/2 cup chopped walnuts
1/4 cup sugar
1 teaspoon ground cinnamon
1 cup heavy whipping cream
Whipped cream or vanilla ice cream, optional
Prepare cake batter according to package, pour into a greased 13x9 inch pan. Combine apples, walnuts, sugar and cinnamon; spoon over batter. Pour cream over top. Bake at 350 degrees for 60 - 70 minutes or until a toothpick inserted near the center comes out clean. Serve with whipped cream or ice cream if desired.