Step 1

Preheat oven to 350° F and grease an 8x8 square baking dish with butter or spray oil.

Step 2

Add the flour, brown sugar, white sugar, and cinnamon to a small mixing bowl and mix together.

Step 3

Add the diced cold butter to the flour mixture and cut it into the flour mixture using a fork or two knives. Make sure all of the flour and sugar mixed and it becomes moist and crumbly. I have even used my hands.

Step 4

In a medium mixing bowl, combine the flour, sugar, baking powder, cinnamon and salt and mix well.

Step 5

Add the butter to the dry ingredients and blend well.

Step 6

Add the milk, egg, and vanilla extract and stir until just barely blended.

Step 7

Pour half of the cake batter into the baking dish and sprinkle a thin layer of the crumb topping across the batter.

Step 8

Then pour the remaining batter in and spread evenly.

Step 9

Top with the remaining streusel topping and again spread evenly across the top.

Step 10

Bake for 40 minutes or until a toothpick comes out clean when inserted into the center.

Step 11

Cool for 5-10 minutes before slicing into 9 squares.