High Protein Chocolate Peanut Butter Baked Oats

High protein chocolate peanut butter baked oats made with rolled oats, real peanut butter, banana, and chocolate protein powder. 21 grams of protein per serving, naturally gluten-free, and tastes like a chocolate peanut butter brownie you can have for breakfast.

I made these high protein chocolate peanut butter baked oats every Sunday for two months before I let myself publish the recipe. One version was dry. One tasted like protein powder pretending to be food. One went straight in the trash. This is the one that finally worked, and I have been making it almost every week since.

These high protein chocolate peanut butter baked oats are a make-ahead breakfast bake of rolled oats, real peanut butter, banana, eggs, cocoa powder, and chocolate protein powder. One pan, six squares, 21 grams of protein and 10 grams of fiber each, and it tastes like a chocolate peanut butter brownie you are allowed to eat for breakfast.

The bananas do most of the sweetening so I can pull way back on the maple syrup. The peanut butter and chocolate do the heavy lifting. And the protein powder is the difference between a baked oatmeal that leaves you hungry by 10am and one that actually carries you to lunch. If you have been hunting for high protein baked oats that taste like real food and not a chalky brick, welcome, this is your recipe.

Why This Works as a High Protein Breakfast

A standard baked oatmeal is mostly oats, milk, and a sweetener. It tastes great and falls apart on protein. You eat it at 7am and you are starving by 9.

This one is built differently. You are getting protein from three places at once, banana for natural sweetness so you can pull back on maple syrup, and real peanut butter doing double duty for flavor and fat to keep you satisfied. The result is 21 grams of protein per serving, 10 grams of fiber, and a slice that actually behaves like a meal.

The three places the protein is coming from:

• Two scoops of chocolate protein powder mixed into the batter
• Real peanut butter (not powdered, which loses too much of the fat that makes this taste good)
• Two large eggs

For me, this is the breakfast I make on a Sunday when I want to set my whole week up. Six squares, six mornings, twenty seconds in the microwave, and I am not thinking about food again until noon.

Ingredients You Need for High Protein Chocolate Peanut Butter Baked Oats

A few notes on what is doing the work here (exact amounts are in the recipe card):

• Rolled oats — Old-fashioned rolled oats give you the best texture. Quick oats will work in a pinch but you will lose some of the chew. Use certified gluten-free oats if you need this to be gluten-free.
• Chocolate protein powder — I use PEScience Chocolate Truffle (code BAILEY saves you money on all their stuff). A whey or whey-casein blend bakes better than plant-based, which can get gritty in oatmeal. If plant-based is what you have, it will still work, just expect a slightly drier texture.
• Creamy natural peanut butter — Natural, the kind where the oil separates, not the no-stir kind with added sugar. Crunchy works if that is your preference. Almond butter or cashew butter swaps in fine.
• Ripe bananas — Three of them, mashed. The spottier the better. They are doing most of the sweetening here so do not skip them in favor of more maple syrup, the texture will not be the same.
• Maple syrup — A quarter cup is all you need with the bananas pulling weight. Honey or agave work too.
• Unsweetened cocoa powder — Regular or Dutch-processed, both work. Dutch-processed gives you a deeper, darker chocolate flavor if you want a brownie energy.
• Almond milk — Unsweetened. Any milk works, dairy or non-dairy, just match your dietary needs.
• Eggs — Two large eggs. They give you structure and bonus protein. A flax egg works if you need it egg-free, the texture will be a touch softer.
• Dark chocolate chips — Three quarters of a cup folded in and sprinkled on top. Milk or semi-sweet work, dark just plays better with the protein powder.
• Vanilla, baking powder, sea salt — The supporting cast. Do not skip the salt, it makes the chocolate taste like chocolate.

How to Make High Protein Chocolate Peanut Butter Baked Oats

1. Preheat your oven to 350°F and grease an 8×8-inch baking dish with butter or cooking spray.
2. Whisk the wet ingredients in a large bowl: peanut butter, maple syrup, almond milk, eggs, vanilla, and mashed bananas. Whisk until smooth and the peanut butter is fully incorporated.
3. Mix the dry ingredients in a separate bowl: rolled oats, cocoa powder, chocolate protein powder, baking powder, and salt.
4. Combine wet and dry, stirring until just mixed. Do not overmix.
5. Fold in the chocolate chips, saving a small handful to sprinkle on top.
6. Pour into your prepared baking dish, spread evenly, and sprinkle the reserved chocolate chips on top.
7. Bake for 30-35 minutes, until the top is set and slightly golden. A toothpick in the center should come out mostly clean with a few moist crumbs (not wet batter).
8. Cool for 10 minutes before slicing into 6 squares. Serve warm with an extra drizzle of peanut butter on top if you are feeling extra.

Variations and Substitutions

The bones of this recipe are forgiving. A few ways to make it yours:

• Make it a PB&J twist — Skip the chocolate chips and swirl two tablespoons of strawberry or raspberry jam through the top before baking.
• Add crunch — Fold in half a cup of chopped peanuts, walnuts, or pecans with the chocolate chips.
• Go nut-free — Sub the peanut butter for sunflower seed butter and use sunflower seeds instead of chocolate chips. Same protein math, no nuts.
• Swap the protein powder flavor — Vanilla protein works just as well and lets the chocolate and peanut butter lead. Cookies and cream is also weirdly good in this.
• Make it single-serve — Divide the batter between three mini ramekins instead of an 8×8 dish and bake for 18-22 minutes. You will get three single-serve baked oats with 14g protein each instead of one big pan.
• Cut the sugar — Skip the chocolate chips, the bananas and protein powder will still carry the sweetness.

How to Store and Meal Prep

This is my favorite reason to make this recipe. Bake on Sunday, breakfast for the whole week.

• Fridge: Store cooled squares in an airtight container in the fridge for up to 5 days. Reheat in the microwave for 30-60 seconds until warmed through.
• Freezer: Wrap individual squares in plastic wrap or parchment, then place in a freezer-safe bag. They keep for up to 3 months. Thaw overnight in the fridge or reheat straight from frozen in the microwave for about 90 seconds.
• Eat cold: I am not joking. Cold straight from the fridge with a drizzle of peanut butter is its own thing. Try it once.

Frequently Asked Questions

Can I make these without protein powder?

Yes, but you will lose about 8 grams of protein per serving. To balance the texture without the protein powder, add an extra quarter cup of rolled oats and an extra two tablespoons of cocoa powder so the consistency stays the same.

How much protein is in one serving?

Each square has 21 grams of protein when you cut the recipe into 6 servings. Cut it into 9 squares and you are looking at 14 grams per serving. Cut it into 12 and it drops to about 10 grams.

Are baked oats actually filling?

Yes, when they are built with enough protein and fiber. This version has 21 grams of protein and 10 grams of fiber per serving, which is what makes it actually keep you full instead of leaving you hungry an hour later like plain oatmeal can.

What is the best protein powder for baked oats?

A whey or whey-casein blend bakes better than plant-based protein powders, which can turn gritty or chalky in baked goods. I use PEScience Chocolate Truffle because it bakes clean and does not have a fake aftertaste. Any chocolate-flavored whey protein you already love will work.

More High Protein Oatmeal Recipes You’ll Love

• Biscoff Baked Oatmeal
• Chocolate Brownie Baked Oatmeal
• Chocolate Chip Baked Oatmeal
• Carrot Cake Baked Oatmeal
• Coffee Cake Baked Oatmeal
• Banana Bread Baked Oatmeal

If you make these high protein chocolate peanut butter baked oats, I would love to see them. Leave a star rating and a quick comment below so other readers know how they turned out, and tag me on Instagram at @basicswithbails or save it to your boards on Pinterest so you do not lose it.