# What You'll Need:
→ Oat Base
01 - 2 cups rolled oats
02 - 1 cup unsweetened almond milk
03 - 2 large eggs
04 - 1 cup plain Greek yogurt
05 - 1/4 cup vanilla or unflavored protein powder
06 - 1/4 cup maple syrup or honey
07 - 1 teaspoon vanilla extract
08 - 1 teaspoon baking powder
09 - 1/4 teaspoon salt
→ Cinnamon Swirl and Crumble
10 - 1/3 cup brown sugar or coconut sugar
11 - 2 teaspoons ground cinnamon
12 - 2 tablespoons melted unsalted butter or coconut oil
13 - 2 tablespoons all-purpose flour or oat flour
14 - Pinch of salt
# Directions:
01 - Preheat oven to 350°F and grease an 8x8-inch baking dish with cooking spray or butter.
02 - In a large mixing bowl, combine rolled oats, almond milk, eggs, Greek yogurt, protein powder, maple syrup, vanilla extract, baking powder, and salt. Whisk until mixture is thoroughly blended with no dry pockets of oats remaining.
03 - In a separate small bowl, stir together brown sugar, ground cinnamon, melted butter, flour, and salt until the mixture resembles coarse crumbs.
04 - Pour half of the oat mixture into the prepared baking dish, spreading evenly across the bottom.
05 - Sprinkle half of the cinnamon crumble mixture evenly over the oat layer.
06 - Pour remaining oat mixture on top and finish with the remaining cinnamon crumble, distributing evenly across the surface.
07 - Using a knife, gently drag it through the mixture in a back-and-forth pattern to create a marbled swirl effect throughout the cake.
08 - Bake for 30 to 35 minutes until the top is golden brown and a knife inserted in the center comes out clean.
09 - Remove from oven and allow to cool for 10 minutes before slicing into four equal portions and serving.