Chocolate Peanut Butter Protein Oatmeal Bake

Chocolate Peanut Butter Protein Oatmeal Bake

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If you’re in need of a simple, healthy breakfast in bulk or something to feed the family over the weekend, this oatmeal bake has you covered. It’s high volume (filling), high protein, and has real peanut butter inside so you know it’s tasty. 

And before you dive in, I’ll add that even if you just need one serving, the recipe is super easy to cut down to fit your needs. 

Need a high protein, filling breakfast recipe that could also be flexed to fix a sweet tooth later in the day? This chocolate peanut butter oatmeal bake should do the trick!

Protein Oatmeal Bake Ingredient and Substitutions 

This oatmeal bake is as easy as throwing everything in a bowl, mixing, and baking. So, I’ll just briefly touch on a few ingredients you might have questions about modifying. 

Protein Powder

The recipe calls for vanilla with added cocoa powder. But feel free to use a chocolate protein powder if that’s what you have on hand. You might add an extra 1/3 scoop to account for the loss of cocoa. 

Like I mentioned in my white chocolate raspberry protein cheesecake, one of the most important things to keep in mind when using other protein powders is scoop size.

white chocolate raspberry protein cheesecake recipe lower carb

I used Bowmar Nutrition’s Protein Frosted Cookie which weighs 28 grams per scoop for a total of 84 grams. Be sure to match this if you use another protein powder to avoid a dry or tough oatmeal bake. 

Rolled Oats vs Quick Oats

A lot of my protein oatmeal recipes (like the infamous Butterfinger Proats) use quick oats for fast cooking. If you wanted to use quick oats instead of rolled oats, that should work fine but the oatmeal bake might cook a bit faster. 

Peanut Butter and Canned Pumpkin

Ah, the real MVP—peanut butter. You can use any nut butter you’d like for this oatmeal bake, but I wouldn’t recommend using something like a powdered peanut butter. You’ll need some fat to balance the protein powder and avoid a dry and tough finished product.

how to make an oatmeal bake

The canned pumpkin is there to add some fat-like properties without the actual fat and calories of something like peanut butter. You’ll never know it’s there but if you wanted to use something else, try unsweetened apple sauce, another fat source, or just more peanut butter. 

I will add that if you wanted to reduce the fat even further and deal with a slightly less delicious oatmeal bake, you could use the powdered peanut butter and use more pumpkin. You can also use a full fat milk to accommodate for some lost fat from other ingredients. 

All right, let’s get to cooking. If you make this oatmeal bake, I’d love to see it! Snap a pic and tag me on Instagram @mason_woodruff. Or you can join my free Facebook group and share it with the Proton Party.

4.8 from 15 votes

Chocolate Peanut Butter Protein Oatmeal Bake

Oatmeal and protein powder mixed with crunchy peanut butter and dark cocoa—all baked for one gooey breakfast treat. 

Course Breakfast
Cuisine American
Keyword oatmeal bake, protein oatmeal
Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings 4 servings
Calories 282 kcal
Author Mason Woodruff


  • 1 C (80g) Rolled Oats
  • 3 scoops (84g) Protein Powder I used Bowmar Nutrition Frosted Cookie
  • 2 Tbsp (10g) Unsweetened Dark Cocoa Powder
  • 1/2 tsp Baking Powder
  • 1/4 C (64g) Peanut Butter
  • 1/4 C (60g) Canned Pumpkin
  • 1/2 C (120mL) Skim Milk or your choice of liquid


  1. Preheat an oven to 350F.

  2. Mix the dry ingredients in a large bowl. 

    oatmeal bake dry ingredients in a bowl
  3. Add the pumpkin, peanut butter, and milk. Stir well.

    liquid ingredients added to the dry ingredients for the oatmeal bake
  4. Transfer the ingredients to a 6.5" cast iron skillet or similar sized baking dish. Different dishes will affect cook time.

    final look at the oatmeal bake before baking
  5. Smooth the top of the mixture and bake for 17-20 minutes, depending on the dish and desired center. I purposely left out any food safety concerns so you can have this like gooey oatmeal or more done like a breakfast cookie.

Recipe Notes

Macros are for 1/4th the entire recipe and do not include any additional drizzle. For the drizzle, I melted a tablespoon of peanut butter and chocolate chips. 

Nutrition Facts
Chocolate Peanut Butter Protein Oatmeal Bake
Amount Per Serving (1 serving)
Calories 282 Calories from Fat 90
% Daily Value*
Fat 10g15%
Carbohydrates 22g7%
Protein 25g50%
* Percent Daily Values are based on a 2000 calorie diet.

More Healthy Breakfast Recipes You Might Like 

Want to incorporate some veggies into your breakfast in a fun way? My honey bacon and brussels sprouts breakfast pie should do the trick.

honey bacon and brussels sprouts healthy breakfast pie recipe 2

And if you’re wondering what to do with leftover pumpkin, check out my savory breakfast pumpkin pizza.

savory pumpkin breakfast pizza

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