Protein Blueberry Baked Oatmeal
A warm, cake-like baked oatmeal studded with juicy blueberries and packed with protein. It's meal-prep friendly, naturally sweetened, and tastes like a blueberry muffin met a bowl of hearty oatmeal. Perfect for busy weekday breakfasts.
For 6 servings
- prep
Preheat the oven and prep the baking dish.
Preheat the oven to 375°F (190°C). Lightly grease an 8x8-inch baking dish with oil or line it with parchment paper.
TIPLining with parchment paper makes lifting and slicing the baked oatmeal much easier. - mix
Mash the bananas and whisk in the wet ingredients.
In a large mixing bowl, mash the ripe bananas thoroughly with a fork until smooth. Add the eggs, milk, maple syrup, and vanilla extract. Whisk until well combined and frothy.
TIPThe riper the bananas, the sweeter and more moist your oatmeal will be. - mix
Stir in the dry ingredients.
Add the rolled oats, protein powder, baking powder, cinnamon powder, and a pinch of salt to the wet mixture. Fold together with a spatula until just combined and no dry pockets remain.
TIPDon't overmix or the oatmeal can become dense. Stop as soon as everything is evenly moistened. - mix
Fold in the blueberries.
Gently fold 1¼ cups of the blueberries into the batter, reserving the rest for the top. If using frozen blueberries, add them directly from the freezer to prevent the batter from turning grey.
- assemble
Transfer to the baking dish and top with remaining berries.
Pour the oatmeal mixture into the prepared baking dish. Spread it into an even layer with the spatula. Scatter the reserved ¼ cup of blueberries over the top and press them in lightly.
- bake · ~35 min
Bake until golden and set.
Place the dish in the centre of the preheated oven. Bake for 32–35 minutes, or until the top is golden brown, the edges are pulling slightly from the sides, and a toothpick inserted into the centre comes out mostly clean.
TIPCheck at 30 minutes. If the top is browning too quickly, tent loosely with foil. - rest · ~10 min
Cool before slicing.
Remove from the oven and let the baked oatmeal cool in the dish for at least 10 minutes. This allows it to firm up and slice cleanly.
TIPSlice into 6 equal rectangles for a perfect meal-prep portion.
What to keep in mind.
6 tips from the recipe — small details that make a real difference to the final dish.
- 1Use very ripe bananas with brown spots for maximum natural sweetness and moisture.
- 2Fold frozen blueberries in directly from the freezer to keep the batter from turning grey.
- 3Let the baked oatmeal cool for a full 10 minutes before slicing so it sets properly.
- 4Check doneness at 30 minutes; a toothpick inserted in the center should come out mostly clean.
- 5Store leftovers in an airtight container in the fridge for up to 5 days; reheat in the microwave or oven.
- 6For meal prep, slice into 6 rectangles, wrap individually, and freeze for up to 3 months.
Adapt it for your goals.
Dairy-free
Swap the cow's milk for unsweetened almond or oat milk; the texture stays moist and fluffy, and it becomes completely dairy-free for those with lactose intolerance.
low sugarLow-sugar
Omit the maple syrup and use an extra half scoop of unflavored protein powder — the ripe bananas and blueberries provide enough sweetness for a lower-sugar breakfast.
high proteinHigh-protein
Add 2 tablespoons of Greek yogurt or cottage cheese to the wet mix and increase the protein powder to ¾ cup; this bumps the protein content without drying out the oatmeal.
veganVegan
Replace the eggs with 2 flax eggs (2 tbsp ground flax + 6 tbsp water) and use a plant-based protein powder; the baked oatmeal still sets firmly with a tender crumb.
Why this is on our healthy list.
High in Plant Protein
Rolled oats and vanilla protein powder combine to deliver a substantial protein boost that helps keep you full and satisfied until lunch.
Rich in Antioxidants
Blueberries are packed with anthocyanins, compounds that help combat oxidative stress and support overall cellular health.
Good Source of Fiber
Oats and blueberries provide both soluble and insoluble fiber, aiding digestion and promoting steady energy release throughout the morning.
Naturally Sweetened
Ripe bananas and a small amount of maple syrup provide sweetness without refined sugar, making this a wholesome choice for balanced eating.
Frequently asked questions
Quick oats will absorb liquid faster and produce a softer, less chewy texture. For best results, stick with old-fashioned rolled oats.
