If you're a peanut butter lover like me, having these creamy overnight oats waiting for you might make mornings just a little bit easier. Packed with 29 grams of protein (and no protein powder), this breakfast is simple and satisfying to fuel busy mornings.
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Breakfast at a Glance
- Prep Time: 5 minutes
- Planning Ahead: Prep it the night before and up to 5 days in advance.
- Morning Effort: None- just grab and eat!
- Protein: 29g per serving
- Fiber: 9g per serving
Nessy's Note
It's no secret that I like love peanut butter. And if I put it on PB avocado toast (have you tried it yet!), it's only natural that I would stir it into my overnight oats too.
If you're a peanut butter lover like me and you haven't tried it in your overnight oats, you have to give these a try! Peanut butter mixed with the Greek yogurt gives these ONOs an almost cheese-cake-y vibe that is filling and the perfect breakfast to have waiting in the fridge on busy mornings.
Ingredient Notes and Substitutions

The precise amounts needed can be found in the recipe card, but here’s a quick summary of the key ingredients and possible substitutions:
- Rolled Oats- These can also be called old-fashioned oats or large flake oats. They are my go to for the Greek yogurt overnight oats recipe that I use as the base for all sorts of flavors (like this peanut butter one) as I find they result in the best texture.
- Substitution: Instant or quick oats work but result in a bit of a "mushy" texture. Steel-cut oats will not work.
- Greek Yogurt- This helps to make the overnight oats high protein without the need for protein powder and also provides most of the liquid for the recipe.
- Substitution: Another type of plain yogurt or blended cottage cheese can be used but note that protein content will vary.
- Peanut Butter- Brings the peanut butter flavor along with contributing to the protein and fiber. Just like in my peanut butter avocado toast recipe, I highly recommend using natural style peanut butter- either crunchy or smooth will work!
- Substitution: Another nut or seed butter would also work but obviously won't give it the peanut butter flavor (though these almond butter overnight oats are pretty tasty!).
- Honey- For sweetness.
- Substitution: Maple syrup or your sweetener of choice can be used instead.
- Chia Seeds- These thicken the overnight oats and add extra fiber.
- Substitution: Ground flaxseed can be used or they can be left out.
- Sea Salt- Just a pinch balances the sweetness.
- Substitution: Kosher or table salt will also work or it can be left out.

Tips for the Best Peanut Butter Overnight Oats
- Adjust the consistency. If the oats thicken too much overnight for your liking (they are pretty thick but that's how I like them), you can stir in a splash of milk (or water) before serving.
- Meal prep for the week. This overnight oatmeal lasts up to 5 days in the fridge, so you can make a batch on Sunday and have breakfast ready for the whole week.
- Up the Peanut Butter. If you would like to add even more peanut butter flavor to these oats, you can try adding a tablespoon of peanut butter powder (plus 1-2 tablespoons of water or milk as it will thicken the oats) or topping the oats with additional peanut butter. For a higher protein option, you can also experiment with replacing the peanut butter with peanut butter powder (plus additional water or milk) though I find regular peanut butter adds the best peanut butter flavor.
- For more tips, troubleshooting and flavor customizations check out my ultimate guide to yogurt overnight oats!
These oats are ready to eat straight from the fridge. If you prefer them warm, microwave in 20-second intervals, stirring between each, until heated to your desired temperature. But don't overheat as the yogurt can curdle.

More Overnight Oats...
If you give this recipe a try, be sure to let me know what you thought in the comments below!

Peanut Butter Overnight Oats
Equipment
- 1 jar or container with lid (at least 10 oz/300mL in size)
Ingredients
- ¾ cup plain Greek yogurt (I prefer 2% for a creamier texture but any type will work)
- 2 tablespoon natural peanut butter (crunchy or smooth), plus additional for topping
- 1 tablespoon honey (or maple syrup)
- ⅛ teaspoon fine sea salt
- ⅓ cup old-fashioned rolled oats (large flake)
- 1 tablespoon chia seeds (or ground flaxseed)
Instructions
- Add the Greek yogurt, peanut butter, honey and sea salt to your jar or container and stir well until fully combined.¾ cup plain Greek yogurt, 2 tablespoon natural peanut butter, 1 tablespoon honey, ⅛ teaspoon fine sea salt

- Stir in the rolled oats and chia seeds until evenly mixed.⅓ cup old-fashioned rolled oats, 1 tablespoon chia seeds

- Let the oatmeal sit in the fridge for at least 4 hours (but overnight for best texture).
- That's all! In the morning, enjoy your breakfast as you get all ready for your busy day.
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.





Marie says
I love anything with peanut butter so I knew I was going to like these! I have had them for breakfast the last 3 days.