21 Day Fix: Baked Peanut Butter Oats and Berries

Baked Peanut Butter Oats and Berries
Serves 1
A baked peanut butter and berry treat for your inner cake lover. Although the berries start on the bottom of the jar, they bubble and rise during baking, creating a beautiful presentation! I used an 8 oz jar (the smaller jar in the photo) for this configuration of the recipe. Divide or multiply to your needs. πŸ™‚
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Prep Time
5 min
Cook Time
30 min
Total Time
40 min
Prep Time
5 min
Cook Time
30 min
Total Time
40 min
  1. 1/2 banana
  2. 1/2 c berries of choice (I prefer blackberries or dark cherries)
  3. 1/4 c rolled oats (uncooked)
  4. 2 t peanut butter
  5. Honey to taste
  1. Preheat oven to 375.
  2. In a bowl, mash banana and combine with honey and peanut butter. Add oats and stir until fully incorporated.
  3. Drop berries in bottom of jar and pour banana mixture on top.
  4. Place uncovered jar in center of rimmed baking sheet.
  5. Bake for 30 minutes.
  6. Remove from oven and allow to cool.
21 Day Fix
  1. 1.5 purple
  2. 1 yellow
  3. 2 teaspoons
  4. Honey allowance
Great Tips
  1. Pick up those nifty reusable plastic covers to store your baked goodies in the fridge overnight. Grab them in the morning and have a delicious breakfast on the go, or throw them in a backpack for an afternoon picnic. Top with frozen Greek yogurt, shredded coconut or crushed almonds for a crunch!
  2. Short on time? Don't want to fire up the oven? "Bake" in the microwave for three minutes.
  1. Don't have a jar? Try a ramekin!
Safety tip
  1. Be sure to check your brand of canning jars to make sure they're oven/temperature safe. I am not responsible for your kitchen blunders. πŸ™‚
From Forks to Fitness http://www.fromforkstofitness.com/

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    • Jean says:

      Yes, a ramekin will absolutely work! They do rise a bit, so leave a bit of space at the top to account for that.

  1. Colin says:

    Is there something to use in place of bananas? I just really don’t like them! Maybe just more of a different fruit? Thanks!

    • Shannon says:

      I just used 1/4 cup of low fat cottage cheese and 1/2 tsp vanilla (as well as cinnamon and some stevia) in place of the banana today. πŸ™‚ It actually tasted better to me than the first time when I followed the recipe to a T! I should note, I used a mix of blueberries and blackberries the first time and today I used peeled and diced apples. πŸ™‚

      • Nikki says:

        Do you think ricotta would be good? With apples sounds so yummy. That would give me a yellow, purple and part of a red. I only get 2 purples

  2. Laura says:

    I’m with Colin. My mom wants to try this but for medical reasons can’t do bananas. Is there a substitute that might work?

  3. Lesa says:

    This was delish! Might sprinkle a little stevia over berries to cut the tartness and add vanilla and cinnamon to the oat mixture. This was a hit with the family!

  4. Valarie says:

    Made this the past few mornings for breakfast- delicious! This morning I overslept so instead of putting it the oven I put it in the microwave for 3 minutes, came out great! Only difference was I stirred the berries in for the microwave and made it in a bowl.

  5. Michele says:

    Jean – what type of mason jars do you use? I want to make sure I buy ones oven safe and every one I look at doesn’t specify. Thanks!

  6. Chris says:

    Thanks for your wonderful recipes. I will be trying this soon. I bought jars because I am waiting for you to post an overnight oats recipe!

    • Jean says:

      You could try omitting it, Miranda. Or maybe try another nut butter in its place? Maybe a dollop of Greek yogurt?

  7. Jenny says:

    I wonder if this can be altered to become a canning project. I was thinking of canning some for my Mom who lives a little far from me and a cousin who is in the Army and stationed in New York. Since I am new to this, would you have any ideas of how to can these instead of just making them for the next day?

  8. Ashley Gratz says:

    Hi Jean!

    So does this recipe fit in the 8 oz jar or do you have to 1/2 it to make it fit?

    Also, after refrigerating, do you recommend warming it up or can I just throw it in my backpack and eat in the afternoon after class?

    Thanks so much! <3

    • Jean says:

      Hey, Ashley! This recipe fits the 8 oz jar perfectly. I eat them straight from the oven, but hubby eats them straight from the fridge. I like them warm or warm with Greek yogurt mixed in — amazing! Right from your backpack would be totally good!

    • Jean says:

      Lynn, I got mine at Target. They are Ball brand, though, so I’m sure they are in other stores that sell Ball jars, too. LOVE them!

    • Jean says:

      Buffie, I haven’t tried it with steel cut oats, but I assume it would. You’d have to use cooked/prepared steel cut oats, though. Don’t use them raw or it would be like eating gravel from a jar, ha!

  9. Colleen says:

    Jean, do you know or has anyone tried that you know of to put some protein powder in this to up the protein content to include a red?

  10. Amanda says:

    Hi Jean, I was wondering if or how I can make multiples of this at the same time. If I have to have jar in center of rimmed dish how can I cook multiples? And would I bake it longer?

    • Jean says:

      Hi, Amanda! Sure, you can. I just say put them in the center to keep them away from the edge, as they can bubble. Just leave a nice perimeter around the pan to protect your oven from over bubble. πŸ™‚

  11. April says:

    I purchased your first ecookbook and did not receive an email for the download. Maybe I entered my address incorrectly? Is there any fix to this?

  12. Kristina Ocampo says:

    I am just starting the 21DF and this recipe looks great. How long does a jar last in the fridge? I’d like make a few and use as my afternoon snack or for on the go. Thanks!

    • Jean says:

      Hey, Kristina! We make and fridge a pretty big batch. I’d say 2 – 3 days is okay. We reheat and add a dollop of yogurt on top. πŸ™‚

  13. Steph says:

    Can you tell me what ‘2 t peanut butter’ means? I understand that ‘c’ is for cup but ‘t’…? Teaspoon or tablespoon?


  14. Shannon says:

    I just started the 21 Day Fix, and perhaps I’m just a bit confused about the carb counts. You used 1/4 cup of oats but counted it as 1/2 cup. Is that because it would fill up 1/2 cup after it’s cooked?

    • Jean says:

      Yepper, that’s exactly the reason, Shannon. In the eating plan, they have it noted as cooked. Oats double in size when you cook them, so 1/4 cup raw will yield you 1/2 cup cooked.

  15. Christine Reeds says:

    Jean, This is one of my favorite morning meals. I also use cherries and wow, yummy! Thanks so much for posting this one.

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