Craving a blueberry muffin with a crumbly, golden top… but not the sugar crash? This High-Protein Blueberry Muffin Baked Oatmeal gives you that classic muffin flavor and texture in a balanced, sliceable breakfast you can make once and enjoy all week.
There’s something so nostalgic about a blueberry muffin. As soon as I see one, I’m immediately transported back to my childhood. Field trips. Bake sales. Soccer games.
And they’re a classic for a reason. Soft and sweet on the inside, crumbly on top, bursting with blueberries.
Sadly, most blueberry muffins are basically cake. Delicious, yes. Filling, not so much.
So this is my version that keeps the feeling, but with a healthier spin. It has that classic blueberry muffin flavor, a sweet streusel on top, and a soft, sliceable center. But underneath it’s built with oats, almond butter, egg whites, and hemp hearts, so it actually keeps me full and satisfied all morning long.
I love making this on a Sunday, cutting it into squares, and knowing I have something I’m genuinely excited to eat all week.
If you’ve been craving something comforting but still practical for a weekday breakfast, this one hits that sweet spot.
Why You’ll Love It
- Classic blueberry muffin flavor with juicy berries and a golden streusel topping.
- Naturally high in protein and fiber without using protein powder
- Simple one-bowl prep that comes together in minutes
- Soft, tender texture that slices neatly into grab-and-go squares
- Perfect for meal prep and stays fresh for several days
- Sweet enough to feel indulgent while still being nourishing and balanced
Looking for another cozy, bakery-inspired breakfast? Try these Almond Croissant Baked Oatmeal Squares.
Key Ingredients
- Rolled oats: The base of the baked oatmeal, giving it a tender, soft-baked texture that holds up well for meal prep. Use gluten-free oats if you’re gluten-intolerant.
- Hemp hearts: A mild, nutty boost of plant-based protein that blends seamlessly into the oats.
- Blueberries: The star of the show. Juicy bursts of sweetness that give it that true blueberry muffin flavor.
- Almond butter: Adds richness and helps bind the bars together.
- Maple syrup: Pure Maple Syrup has natural sweetness that brings everything together with warm, caramel notes.
- Egg whites: A lean source of protein that keeps the texture soft without making the bars dense.
- Plant-based milk: Adds moisture to create that soft, sliceable baked oatmeal consistency.
- Protein oat streusel topping: Made with oat flour, protein powder, coconut sugar, and coconut oil for a lightly sweet, crumbly muffin-top finish.
Craving more winter breakfast inspiration? Try the 10 High-Protein Winter Breakfast Ideas.
How to Make These High-Protein Blueberry Muffin Baked Oat Bars
This recipe comes together in just a few simple steps and bakes into soft, sliceable squares with a golden, crumbly top.
- In a large bowl, whisk the egg whites, milk, almond butter, maple syrup, vanilla extract, and lemon zest until smooth and fully incorporated.
- Add the rolled oats, hemp hearts, salt, baking powder, and cinnamon, and stir until evenly combined.
- Gently fold in most of the blueberries, reserving some for the top.
- Spread the batter evenly into a greased baking dish, smoothing the top. Scatter the remaining blueberries over the surface.
- In a small bowl, combine the oat flour, protein powder, coconut sugar, and salt. Drizzle in the melted coconut oil and mix with your fingers until the mixture looks sandy and begins to form small clumps.
- Sprinkle the streusel evenly over the top. Bake until the center is set. The edges should be lightly golden and the middle no longer glossy.
- Let the baked oatmeal cool before slicing into squares. This helps it firm up and gives you clean, bakery-style edges.
Love baked oats? These Pecan Pie Baked Oatmeal Bars are another great flavor combo to try.
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Tips & Variations
- Make it gluten-free: Use certified gluten-free rolled oats to keep this recipe fully gluten-free.
- Warm the almond butter: Slightly warm the almond butter before whisking. It blends more smoothly with the other wet ingredients.
- Make it less sweet: Reduce the maple syrup to 1⁄3 cup for a more lightly sweet breakfast bar.
- Use frozen blueberries: Add them straight from frozen without thawing to prevent excess moisture and streaking.
- Turn it into oat muffins: Divide the batter into a lined muffin tin and bake for 20 to 25 minutes.
Storage & Meal Prep
Store the baked oatmeal in an airtight container in the refrigerator for up to 4 days.
The squares hold their shape well and reheat quickly in the microwave or oven.
For meal prep, slice the bars and separate them with parchment paper so they are easy to grab throughout the week.
You can also freeze individual squares for up to three months and thaw them overnight in the fridge.
FAQ
Yes. Quick oats will work, but they create a softer, more uniform texture since they absorb liquid faster. If you prefer baked oatmeal that feels a little heartier with more structure, rolled oats are the better choice.
Yep, 1⁄3 cup works well if you prefer a lightly sweet version.
Definitely. Let it cool completely, slice it into squares, and freeze it in an airtight container for up to three months. Thaw overnight in the fridge or reheat from frozen in the microwave for a quick breakfast.
A quick 15 to 20 seconds in the microwave warms it through without drying it out. You can also pop a square into an air fryer if you prefer crispier edges.
High-Protein Blueberry Muffin Baked Oats
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Ingredients
Instructions
- Preheat oven to 350°F. Lightly grease an 8×8-inch baking dish.
- In a large bowl, whisk together 1 cup egg whites, ¾ cup unsweetened plant-based milk, ½ cup almond butter, ½ cup maple syrup, 1½ tsp vanilla extract, and ½ tsp lemon zest until smooth.
- Add 2 cups rolled oats, ¼ cup hemp hearts, ½ tsp salt, 1½ tsp baking powder, and 1½ tsp cinnamon.
- Stir until fully combined. Gently fold in 1 cup blueberries.
- Spread the batter evenly into the prepared baking dish. Scatter the remaining ½ cup blueberries over the top.
- In a small bowl, combine 3 tbsp vanilla protein powder, 3 tbsp oat flour, 3 tbsp coconut sugar, and a pinch of salt. Drizzle in 1-2 tbsp melted coconut oil, mixing with your fingers until the mixture becomes sandy and begins to clump together.
- Sprinkle the streusel evenly over the oatmeal. Bake for 35 to 45 minutes, or until the center is set.
- Allow to cool for at least 15 to 20 minutes before slicing into 9 squares for clean edges.
Nutrition
More recipes you’ll love
- Dubai Chocolate Overnight Oats
- Hot Chocolate Protein Oats
- High-Protein Apple Cinnamon Muffins with Protein Crumble
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These oat bars make me genuinely excited to get out of bed in the mornings.