Perfect for a filling make-ahead breakfast, these peanut butter jelly baked oatmeal cups are wholesome, portable and packed with protein.
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Breakfast at a Glance
- Prep Time: 10 minutes hands on; 1 hour total
- Planning Ahead: Prep them fully ahead of time
- Morning Effort: Simply reheat (if you'd like) and eat!
- Protein: 10g per cup
- Fiber: 3g per cup
Nessy's Note
Is there anything better than peanut butter and jelly? Well, maybe peanut butter and chocolate. Or peanut butter and banana (like this breakfast peanut butter banana split).
Okay, maybe I just love peanut butter in all forms... but PB + J will always hold a special place (or taste?). It's nostalgic and satisfying. And the perfect flavor to turn into baked oatmeal (almost as good as brownie baked oatmeal).
Made for busy mornings, I baked this in muffin tins so that they can be portable and eaten on the go. And with 10 grams of protein per cup, they'll help fuel your day.
Ingredients and Substitutions

- Large Flake Rolled Oats (AKA Old Fashioned Oats)- I highly recommend using large flake rolled oats for best texture (it's what I like best in peanut butter overnight oats too). Quick oats and instant oats soak up the liquids too quickly and can affect the consistency a bit.
- Pea Protein Isolate Powder- I have tested this recipe with both brown rice protein and half pea half rice with good results.
- Substitution: Oat flour will work in place of the protein powder (but will yield a lower protein content). You can also try using a different protein powder such as whey but you may need to experiment with reducing the water.
- Ground Flaxseed- For a boost of fiber and omega-3s.
- Substitution: You can use an additional ¼ cup of oats instead.
- Maple Syrup- For sweetness and moisture.
- Substitution: Honey will also work.
- Peanut Butter- For the PB in these PB and J baked oats.
- Substitution: Another nut or seed butter such as almond or sunflower see will work but then these cups will obviously not be "PB and J" flavored. But they are still delicious!
- Eggs- Provide binding and a little bit of protein.
- Baking Powder- While they are still quite dense and hearty, this gives them just a bit of lift that makes them slightly more muffin like.
- Sea Salt- To balance out the flavors. Table or kosher salt will also work.
- Applesauce- Provides binding and moisture.
- Substitution: You could use mashed banana, pumpkin puree or Greek yogurt instead.
- Mixed Berries- These cook down as the oatmeal bakes and create little jammy pockets to bring the "J" element of PB+J, just like the frozen strawberries on this strawberry peanut butter toast. I like to use frozen mixed berries for ease (I almost always have some in my freezer) but fresh works too. If using frozen, DO NOT thaw prior or it will make the muffins too moist.
- Substitution: Any combo of berries (or simply choose one type) is great. You can also sub them out for chopped apples or 1 cup (in place of the 2 cups berries) of nuts, seeds, chocolate chips, etc.

Tips for the Best PB + J Baked Oatmeal Cups
- Use the Right Oats. Choose old-fashioned (large flake) rolled oats for the best texture and consistency in your baked oatmeal cups.
- Bake Immediately. After you've mixed your ingredients, bake the oatmeal cups right away as the oats will continue to soak up liquid as the batter sits.
- Adjust for the Protein Powder. I have tested this recipe with pea and rice protein. Some protein powders tend to absorb less water, so if using a different type, you may want to reduce the water in the recipe by a couple of tablespoons.
- Prevent Sticking. The batter is sticky so grease the muffin tin very well or use silicone liners to ensure easy removal after baking.
More Baked Oatmeal Recipes
If you give this recipe a try, be sure to let me know what you thought in the comments below!

PB and J Baked Oatmeal Cups
Equipment
- 2 muffins tins
Ingredients
- 2 cups large flake rolled oats
- 1 cup pea protein isolate powder *
- ⅓ cup ground flaxseed (or additional oats)
- 1 and ½ cups water (or milk)
- ½ cup maple syrup (or honey)
- ½ cup peanut butter
- 2 eggs
- 1 teaspoon baking powder
- ¼ teaspoon fine sea salt
- ½ cup applesauce (or Greek yogurt, pumpkin puree and mashed banana)
- 2 cups frozen berries (don't thaw)
Instructions
- Preheat the oven to 350 °F and prepare two muffin tins. The recipe makes 16-18 cups so you need more than one tin. *I recommend using silicone liners if possible as these cups tend to stick a bit to paper liners. If you don't have silicone liners, you can bake them right in the muffin tin but be sure to grease it very well.
- In a large bowl, mix together all of the ingredients except for the berries until well combined. Fold in berries.2 cups large flake rolled oats, 1 cup pea protein isolate powder, ⅓ cup ground flaxseed, 1 and ½ cups water, ½ cup maple syrup, ½ cup peanut butter, 2 eggs, 1 teaspoon baking powder, ¼ teaspoon fine sea salt, ½ cup applesauce, 2 cups frozen berries

- Scoop the batter evenly into your prepared muffin tin, filling all the way to the top.

- Bake for 27-30 minutes until the centers are set (they should bounce back slightly when pressed).

- Remove from the oven and allow to cool for 10 minutes in the muffin tin.
- If you baked them directly in the muffin tin, run a butter knife around the edges of each to help release them.

- Enjoy warm or move to a wire rack to cool completely.

Notes
Nutrition
Nutrition Note: Nutritional information is estimated using an online calculator and accuracy is not guaranteed. Remember food is more than numbers and this info is intended as a support.





annette says
LOVED these! But not just for breakfast. They make a wonderfully delicious (and nutritious) snack!
Janessa says
I'm so glad you liked this recipe, Annette!