Chocolate High Protein Brownie Baked Oatmeal

Here is my favorite high protein brownie baked oatmeal recipe, with chocolate protein powder, cocoa powder, oats, and chocolate chips, all baked together into a warm, fudgy breakfast that tastes like dessert but actually fuels your morning.

This brownie baked oatmeal has become my go-to breakfast when I want something filling that my kids will actually eat without complaining. I love that I can prep it the night before and just pop it in the oven in the morning. Plus, it’s got enough protein to keep everyone satisfied until lunch, which is a win in my book.

What Kind of Oats Should I Use?

For this baked oatmeal, old-fashioned rolled oats are your best bet since they hold their texture nicely while baking and give you that classic oatmeal consistency. Quick oats will work in a pinch, but they tend to create a softer, more cake-like texture since they’re cut smaller and absorb liquid faster. I’d steer clear of steel-cut oats for this recipe though, as they won’t soften enough in the short baking time and you’ll end up with a crunchy, undercooked result. If you need a gluten-free option, just make sure to grab certified gluten-free oats since regular oats are often processed in facilities that handle wheat.

Options for Substitutions

This recipe is pretty forgiving and works well with a few simple swaps:

• Nut butter: Any nut or seed butter works here – almond, peanut, cashew, or even sunflower seed butter if you have a nut allergy. They’ll all give you that creamy texture and richness.
• Milk: Use whatever milk you have on hand – dairy, almond, oat, soy, or coconut milk all work fine. Just keep in mind that thicker milks like oat might make it slightly denser.
• Maple syrup: Honey, agave nectar, or even a mashed banana can replace the maple syrup. If using banana, you might want to reduce the milk by a tablespoon since it adds moisture.
• Chocolate protein powder: Vanilla protein powder works too – just add an extra tablespoon of cocoa powder to keep that chocolate flavor strong. You could also use plain protein powder with the same cocoa adjustment.
• Oats: Stick with regular rolled oats or quick oats for this one. Steel-cut oats won’t soften properly in the baking time, and instant oats might turn mushy.
• Chocolate chips: Feel free to use dark chocolate chunks, cacao nibs for less sugar, or even chopped nuts if you want extra crunch instead of chocolate.

Watch Out for These Mistakes While Baking

The biggest mistake with baked oatmeal is skipping the extra milk if your batter looks thick – protein powder absorbs a lot of liquid, so if your mixture seems dry or crumbly before baking, add those extra 2 tablespoons of milk to avoid a dense, dry result.

Overbaking is another common issue that turns your brownie oatmeal into a hockey puck, so pull it out when the center still looks slightly underdone (around 18-20 minutes) since it will continue cooking as it cools.

Don’t forget to grease your ramekin well with oil or butter, otherwise you’ll have a tough time getting your baked oatmeal out in one piece.

Finally, resist the urge to dig in right away – letting it cool for at least 5 minutes helps it set up properly and prevents you from burning your mouth on molten chocolate chips.

What to Serve With Brownie Baked Oatmeal?

This brownie baked oatmeal is pretty filling on its own since it’s packed with protein, but I love adding a dollop of Greek yogurt on top for extra creaminess and even more protein to start the day. Fresh berries like strawberries or raspberries are perfect alongside it because they cut through the richness of the chocolate and add a nice pop of freshness. If you want to make it feel more like dessert for breakfast, drizzle some extra nut butter on top or add a handful of sliced bananas. A hot cup of coffee or cold glass of milk makes the perfect drink pairing to round out your morning meal.

Storage Instructions

Store: Keep your brownie baked oatmeal in an airtight container in the fridge for up to 4 days. It actually tastes great cold straight from the fridge if you’re in a rush, or you can warm it up for that fresh-baked feel again.

Freeze: This freezes really well for meal prep! Let it cool completely, then wrap it tightly in plastic wrap or store in a freezer-safe container for up to 2 months. I like to slice it into portions before freezing so I can grab just what I need.

Reheat: Warm it up in the microwave for about 30-45 seconds, or pop it in the oven at 350°F for 5-10 minutes if you want that crispy top back. If it’s frozen, let it thaw in the fridge overnight or add an extra 30 seconds to the microwave time.

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 560-630
• Protein: 26-34 g
• Fat: 20-26 g
• Carbohydrates: 65-75 g

Ingredients

For the batter:

• 1 egg (room temperature, about 70°F)
• 1 tbsp nut butter (I prefer Justin’s almond butter)
• 4 tbsp milk
• 1.5 tbsp maple syrup
• 1/2 tsp vanilla extract
• 1/2 cup oats (I always use Quaker Old Fashioned Oats)
• 3 tbsp chocolate protein powder
• 1.5 tbsp cocoa powder
• 1/4 tsp baking powder
• 1/4 tsp salt
• 1/4 tsp espresso powder

For the mix-ins and toppings:

• 2.5 tbsp chocolate chips (Ghirardelli semi-sweet works best here)
• fresh berries
• sliced banana (cut into 1/4-inch rounds)

Step 1: Preheat Oven and Prepare Ramekin

• oil for coating

Preheat your oven to 350°F.

While it heats, lightly coat a single-serve ramekin (about 8 oz capacity) with a small amount of oil to prevent sticking.

This gives you time to prepare your ingredients while the oven reaches temperature.

Step 2: Combine Wet Ingredients

• 1 egg
• 1 tbsp nut butter
• 2 tbsp milk
• 1.5 tbsp maple syrup
• 1/2 tsp vanilla extract

In a medium bowl, whisk together the room temperature egg, nut butter, and 2 tablespoons of milk until well combined and relatively smooth.

The room temperature egg will blend more easily with the nut butter, creating a smoother base.

Add the maple syrup and vanilla extract, whisking until fully incorporated.

Step 3: Mix Dry Ingredients Together

• 1/2 cup oats
• 3 tbsp chocolate protein powder
• 1.5 tbsp cocoa powder
• 1/4 tsp baking powder
• 1/4 tsp salt
• 1/4 tsp espresso powder

In a separate small bowl, whisk together the oats, chocolate protein powder, cocoa powder, baking powder, salt, and espresso powder.

I like to mix the dry ingredients separately first—it ensures the leavening and cocoa are evenly distributed throughout, which prevents any dense or bitter pockets in the final baked oatmeal.

Step 4: Combine Wet and Dry Mixtures

• dry ingredient mixture from Step 3
• wet ingredient mixture from Step 2
• 2 tbsp milk

Pour the dry ingredient mixture from Step 3 into the wet ingredients from Step 2, stirring gently with a spatula until just combined.

The batter should be thick but slightly moist.

If it looks too dry, add the remaining 2 tablespoons of milk and stir until you reach a cake-batter consistency that holds together but still spreads easily.

Step 5: Assemble in Ramekin and Bake

• batter from Step 4
• 2.5 tbsp chocolate chips
• prepared ramekin from Step 1

Pour the batter into your prepared ramekin from Step 1, spreading it evenly.

Top with the chocolate chips, pressing them in slightly so they stay distributed throughout.

Bake for 18-22 minutes, until the top is set but still has a slight jiggle in the very center when you gently shake the ramekin—this keeps it moist and cake-like rather than dry.

I prefer the shorter baking time for a fudgier texture.

Step 6: Cool and Serve with Fruit

• baked oatmeal from Step 5
• fresh berries
• sliced banana

Remove the ramekin from the oven and let it cool for 5-10 minutes—this allows the structure to set while keeping the center tender.

Top with fresh berries and sliced banana rounds, which add natural sweetness and a nice textural contrast to the warm, fudgy oatmeal.

Chocolate High Protein Brownie Baked Oatmeal

Delicious Chocolate High Protein Brownie Baked Oatmeal recipe with step-by-step instructions.

Print Recipe Pin Recipe

Prep Time 10 minutes mins

Cook Time 20 minutes mins

Total Time 30 minutes mins

Servings: 1 serving

Calories: 595

Ingredients Method

Ingredients

  

For the batter

• 1 egg (room temperature, about 70°F)
• 1 tbsp nut butter (I prefer Justin's almond butter)
• 4 tbsp milk
• 1.5 tbsp maple syrup
• 1/2 tsp vanilla extract
• 1/2 cup oats (I always use Quaker Old Fashioned Oats)
• 3 tbsp chocolate protein powder
• 1.5 tbsp cocoa powder
• 1/4 tsp baking powder
• 1/4 tsp salt
• 1/4 tsp espresso powder

For the mix-ins and toppings

• 2.5 tbsp chocolate chips (Ghirardelli semi-sweet works best here)
• fresh berries
• sliced banana (cut into 1/4-inch rounds)

Method

 

1. Preheat your oven to 350°F. While it heats, lightly coat a single-serve ramekin (about 8 oz capacity) with a small amount of oil to prevent sticking. This gives you time to prepare your ingredients while the oven reaches temperature.
2. In a medium bowl, whisk together the room temperature egg, nut butter, and 2 tablespoons of milk until well combined and relatively smooth. The room temperature egg will blend more easily with the nut butter, creating a smoother base. Add the maple syrup and vanilla extract, whisking until fully incorporated.
3. In a separate small bowl, whisk together the oats, chocolate protein powder, cocoa powder, baking powder, salt, and espresso powder. I like to mix the dry ingredients separately first—it ensures the leavening and cocoa are evenly distributed throughout, which prevents any dense or bitter pockets in the final baked oatmeal.
4. Pour the dry ingredient mixture from Step 3 into the wet ingredients from Step 2, stirring gently with a spatula until just combined. The batter should be thick but slightly moist. If it looks too dry, add the remaining 2 tablespoons of milk and stir until you reach a cake-batter consistency that holds together but still spreads easily.
5. Pour the batter into your prepared ramekin from Step 1, spreading it evenly. Top with the chocolate chips, pressing them in slightly so they stay distributed throughout. Bake for 18-22 minutes, until the top is set but still has a slight jiggle in the very center when you gently shake the ramekin—this keeps it moist and cake-like rather than dry. I prefer the shorter baking time for a fudgier texture.
6. Remove the ramekin from the oven and let it cool for 5-10 minutes—this allows the structure to set while keeping the center tender. Top with fresh berries and sliced banana rounds, which add natural sweetness and a nice textural contrast to the warm, fudgy oatmeal.