Looking for a hearty gluten-free baked oatmeal, easy high-protein breakfast, or a healthy meal-prep recipe? This Protein Baked Oatmeal combines rolled oats, ripe banana, protein powder, chia seeds, berries, and warming cinnamon into a soft, naturally sweet breakfast that's perfect for busy mornings. It's easy to prepare ahead of time and can be enjoyed warm or cold throughout the week.