If you love peanut butter, you need to try this baked oatmeal recipe! It’s packed with peanut butter and peanut flour for an extra boost of protein and peanut flavor!

baked oatmeal

I’ve been making baked oatmeal a lot lately because I love it for breakfast and my toddler will eat for any meal! It’s an easy thing to keep in the fridge and reheat during the week as needed. I’ve made a lot of different types of baked oatmeal but I wanted to make peanut butter the star of the show in this recipe. To add even more protein to the recipe, I used a combination of peanut butter and peanut flour. This adds healthy fat but also lots of protein!

What is Peanut Flour?

Have you heard of peanut flour? It’s just peanuts with the oil pressed out, and ground into flour. PB2 started making it 2007, and since then, lots of other brands have popped up on the market! You can even find it at Trader Joe’s and Aldi! If you’re having trouble finding it on grocery store shelves, you can always get it on Amazon. Lately, I’ve been ordering the organic kind from PBfit. It does have a bit of added sugar, but it’s only a small amount.

If you don’t have peanut flour, you can still make this recipe! You can swap out the peanut flour for vanilla protein powder, but you’ll need to reduce the sweetener to taste based on our protein powder. Or you can just add a little extra peanut butter.

What are Chia Seeds?

Chia seeds help bind the oats together to give this baked oatmeal a thicker texture. They are an excellent source of omega-3 fatty acids, aka the “good” fats. They are also a great source of fiber at 10 grams per ounce! They contain protein as well as iron, calcium, magnesium, and zinc. If you don’t have chia seeds, you can use ground flaxseeds instead.

The Best Type of Oats for Baked Oatmeal

For this recipe, you’ll need rolled oats, also called old-fashioned oats. This recipe does not work with steel cut oats, which take longer to bake. But I do have a great recipe for baked steel cut oats if you’d like to try it! Do not use instant oats which cook too quickly for this recipe.

How to Make Baked Oatmeal

How to Store Leftover Oatmeal

Store leftover baked oatmeal in the fridge for up to 5 days. To reheat, place a slice on a microwave-safe plate and reheat at 50% power for 30 second intervals until heated. You can also freeze leftover oatmeal. I recommend dividing it into single-serving portions and then freezing individual servings. This makes it easy to defrost and reheat the oatmeal as needed.

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peanut butter oatmeal

Peanut Butter Baked Oatmeal

  • Author: Liz Thomson
  • Prep Time: 5 minutes
  • Cook Time: 30 minutes
  • Total Time: 35 minutes
  • Yield: 6 servings 1x
  • Category: Breakfast
  • Method: Baked
  • Cuisine: American
  • Diet: Vegan


If you love peanut butter, you need to try this baked oatmeal recipe! It’s packed with peanut butter and peanut flour for an extra boost of protein and peanut flavor!


Units Scale
  • 2 cups rolled oats
  • 1/4 cup peanut flour
  • 1/2 teaspoon baking powder
  • 1/4 cup chia seeds or ground flaxseeds
  • 1/4 teaspoon salt
  • 1 3/4 cups almond milk
  • 3 tablespoons maple syrup
  • 1/2 cup peanut butter
  • 1 teaspoon vanilla


  1. Preheat oven to 375 degrees
  2. Spray an 8×8 baking dish with non-stick cooking spray.
  3. In a large bowl, combine the oats, baking powder, peanut flour, salt, and chia seeds. Stir until combined.
  4. Add the almond milk, maple syrup, peanut butter, and vanilla. Stir until well combined.
  5. Bake for 30-35 minutes until brown on the edges.
  6. Let cool for 15 minutes before slicing.
  7. Drizzle with peanut butter, if desired. Cut into 6 pieces.

Keywords: peanut butter baked oatmeal

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