Tastes Like "Phil's" New York Crumb Cake

Ingredients for the Cake

1/2 box yellow cake mix
1/2 cup of oil
1/2 cup milk
2 eggs

Ingredients for Crumb Topping

2 cups of flour
3/4 cup unsalted butter, softened
1/3 cup brown sugar
1/3 cup granulated sugar
1 tsp vanilla
1 tsp cinnamon
confectioners' sugar for dusting

Directions
1. Preheat oven to 350. Grease a 9 x 12 pan
2. In a large bowl, use an electric mixer (or your stand mixer) to combine all cake ingredients. Beat on medium speed for 2 minutes. Spread batter in pan and bake for 10 minutes or until partially set. Set the pan aside until ready for topping.
3. Combine the all crumb topping ingredients except the confectioners' sugar in a large bowl. Mix until it forms a crumb consistency. Sprinkle crumbs over the cake pan, pressing lightly and ensuring full coverage of the cake batter. Bake 20 minutes or until light brown. Let the cake cool for at least an hour.
4. Before serving, dust the entire cake with confectioners' sugar. Cut the cake and serve!

Notes
This cake doubles beautifully and uses the entire cake mix and so forth. Double all the ingredients. If doubling, use either two 9 x 12 pans and keep the time the same, or use one 12 x 16 pan (a jelly roll sheet will work very well) and increase the time for the initial baking to close to 20 minutes (keep an eye on it).