1 (18¼-ounce) package yellow cake mix
1/2 cup sweetened flaked coconut
1/2 cup (1 stick) unsalted butter, room temperature
4 small pippin apples, peeled, cored, thinly sliced
1/4 cup plus 2 tablespoons sugar
1 teaspoon cinnamon
1 cup sour cream
1 egg
Recipe
Preheat oven to 350°F. Butter 9x13-inch baking dish.
Combine cake mix and coconut in large bowl. Add butter and cut in, using fingers or pastry blender, until mixture is crumbly.
Press mixture onto bottom and 1 inch up sides of prepared baking dish. Bake until edges of crust are golden brown, about 10 minutes.
Arrange apples over crust. Sprinkle apples with 1/4 cup sugar and 1 teaspoon cinnamon. Whisk sour cream, egg and remaining 2 tablespoons sugar in small bowl to blend. Pour mixture evenly over apples.
Bake until apples are tender and custard is set, about 40 minutes. Serve warm.