The Best Crumb Coffee Cake EVER

I made this cake today and ate half of the pan myself! Amazingly good and easy.

Cake:
1 yellow cake mix
1 cup sour cream or plain yogurt
1/3 cup oil
1/4 cup water
1/4 cup sugar
4 large eggs
1 t vanilla

Place all ingredients in a large bowl and blend with an electric mixer until smooth.

Reserve 1 cup batter.

Spoon the remaining cake batter into a greased 9 by 13 pan.

Apples:
Peel and dice 2 - 3 apples and sprinkle over the cake batter.

Cover with remaining cake batter (as best you can)



Crumb Topping:
1/3 cup dark brown sugar
1/3 cup granulated sugar
1 teaspoon ground cinnamon
1/2 teaspoon ground ginger
1/4 teaspoon nutmeg
1/8 teaspoon salt
1/2 cup melted butter
1 1/2 cups flour

In a large bowl, whisk together sugars, spices, salt and butter until smooth. Stir in flour with a spatula. It will look like a solid dough.

Using your hands, drop pieces of crumb topping over the cake.

Bake at 350 degrees 30 - 40 minutes, or until toothpick comes out clean.