Start by gathering all your ingredients. It’s like getting your ducks in a row before heading to the pond! Preheat your oven to 350°F (175°C). Grease two 6-inch round cake pans with butter, then line the bottoms with parchment paper for easy removal.

In a large mixing bowl, whisk together the eggs and maple syrup until they’re well combined. Add the melted butter and mix until smooth. Then, stir in the vanilla extract and cinnamon. In a separate bowl, combine the oat flour, baking powder, and salt.

Gradually add this dry mixture into the wet ingredients, mixing until just combined. (Don’t overmix; a light hand is key here.)

Divide the batter evenly between the prepared cake pans. Smooth the tops with a spatula, then pop them in your preheated oven.

Bake for 25-30 minutes or until a toothpick inserted in the center comes out clean. Let them cool in the pans for about ten minutes before transferring to wire racks to cool completely.

While the cakes are cooling, prepare the frosting! In a large bowl, mix the Greek yogurt, maple syrup, lemon zest, and vanilla extract together until it's smooth and creamy. Taste and adjust the sweetness according to your preference.

Once the cakes are completely cool, place one layer on a serving plate. Evenly spread a layer of frosting on top, then gently place the second cake layer on top. Frost the top and the sides of the cake with the remaining Greek yogurt frosting.

Here comes the fun part! Top the cake with fresh mixed berries for an added pop of color and freshness. Feel free to get creative—arranging the berries in fun patterns can add an extra festive look.