Start by grinding your oats in a high-speed blender until they become a fine flour-like consistency.
Next, add the mashed banana, maple syrup, vanilla protein powder, cinnamon, almond milk, baking powder, and vanilla extract to the blender. Blend everything together on high speed until smooth.
Pour this creamy oat mixture into a lightly greased, oven-safe dish.
In a small bowl, mix the coconut sugar and the additional cinnamon for the swirl. Spoon this mixture over the oat batter and use a knife or skewer to gently swirl it into circles.
Bake in a preheated oven at 350°F (175°C) for 22 to 25 minutes, or until set and lightly golden.
While the oatmeal bakes, whisk together the softened cream cheese, plain Greek yogurt, and powdered sugar for a simple, healthy icing.
Once the baked oatmeal is slightly cooled, drizzle generously with the prepared icing and get ready to enjoy a delightful, healthy treat!