Step 1

Mix egg whites with cream of tarter, vanilla, and zero calorie sugar. Beat until stiff peaks form.

Step 2

Combine flour and protein powder, and fold it into egg whites.

Step 3

Spray 2, six inch cake pans with cooking spray. Divide cake batter between the two pans. If you don't use frosting, add sprinkles to the top of the cakes before cooking.

Step 4

Bake in 350 degree oven for 15 minutes.

Step 5

Make frosting by combining greek yogurt with sugar free pudding mix.

Step 6

If making layers, cut bottom layer cake so the top is flat. Spread with half the frosting yogurt mix. Lay second layer on top, and spread remainder of the yogurt.

Step 7

Top with sprinkles.