Step 1

Preheat oven to 350°F and line an 8x8” baking pan with parchment paper; Spray sides with cooking spray.

Step 2

In a bowl, combine whole wheat flour, half protein powder, baking powder, baking soda and salt. Set aside.

Step 3

In a large bowl, beat together butter and half protein powder using an electric hand mixer or paddle attachment until combined.

Step 4

Add Greek yogurt, milk and egg and beat again.

Step 5

Add dry mix to wet and fold using a large spoon or spatula.DO NOT OVER-MIX or the cake will be tough because of the protein powder and gluten from the whole wheat flour.

Step 6

In another bowl, combine flour, zero calorie sugar replacement, cinnamon and coffee.

Step 7

And butter cubes and a fork to work mixture to form heavy crumbs.

Step 8

Spread ½ cake batter into baking pan, sprinkle on half streusel, spread remaining batter (flatten with back of spoon or spatula), top with remaining coffee-cinnamon mixture.

Step 9

Bake on center rack for 25-30 minutes, until a tester inserted into the center comes out clean and center of cake is springy to touch.

Step 10

Let cool in pan fro 15 minutes then transfer to a cooling rack to cool completely.