Step 1

Preheat oven to 350 degrees and grease an 8x8 pyrex or cake pan.

Step 2

Combine oat flour, buckwheat flour, protein powder, coconut sugar, baking powder, salt and cinnamon in a large bowl.

Step 3

Whisk together egg, applesauce, yogurt, almond milk and vanilla extract in a small bowl.

Step 4

Pour wet ingredients into dry and mix until fully incorporated.

Step 5

Pour batter into the prepared baking dish.

Step 6

Combine sugar + cinnamon and sprinkle over the batter, swirl into the entire surface of the batter using a knife or toothpick.

Step 7

Bake for about 25-30 minutes or until toothpick inserted in the center of the cake comes out clean.

Step 8

Let cool in pan for 10-15 minutes before slicing.

Step 9

Store in the refrigerator in an airtight container.