Step 1: Prep and Mash
Preheat your oven to 350°F (175°C). Grease two 4-inch round cake pans (or large ramekins) with coconut oil and line the bottoms with parchment paper.Step 2: Whisk the Wet Ingredients
In a medium bowl, whisk the mashed bananas, applesauce, eggs, and vanilla extract until fully combined and slightly frothy.Step 3: Fold in the Dry
Add the oat flour, baking powder, and cinnamon to the wet mix. Stir gently with a spatula until just combined.Step 5: Cool and Frost
Let cakes cool in pans for 10 minutes, then transfer to a wire rack to cool completely. While cooling, strain your Greek yogurt through a cheesecloth or paper towel for 15 minutes to thicken it further for piping. Frost gently.