Peanut butter overnight oats feel like breakfast and dessert all in one little mason jar. Old fashioned oatmeal, creamy peanut butter, and sweet honey make for the perfect peanut butter overnight oats.
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Overnight oats are a type of no-cook oatmeal. You mix dry and wet ingredients to soak together overnight. Even without microwaving or boiling the oatmeal, it becomes soft overnight.
Peanut butter overnight oats call for a few ingredients you may already have on hand.
- old fashioned oatmeal
- almond milk
- plain Greek yogurt
- creamy peanut butter
- vanilla extract
See the recipe card for quantities.
Cover and refrigerate overnight or a minimum of four hours.
Remove from the fridge, stir the oatmeal, and serve.
Topping ideas: I always like to add a few toppings to my overnight oats for a little crunch. For this recipe, try peanuts (chopped or whole), granola, or chocolate chips. For an extra peanut butter punch, add a drizzle of peanut butter to the top. And of course, peanut butter goes well with bananas.
Want to mix it up?
Here are a few ways to personalize your peanut butter overnight oats to make them your own.
- Milk - Use any type of milk you like. I keep unsweetened vanilla almond milk on hand, so that's what I like to use. Oatmeal is a carb-heavy breakfast as it is, so I avoid dairy milk which has more sugar than you would expect. For this reason, I also wouldn't use oatmilk (though you absolutely can if carbohydrates are not a concern!).
- Nut butter - This recipe would be tasty with any nut butter (almond butter, sunflower butter, you name it!).
- Honey - I use honey because peanut butter and honey just makes sense to me, but you can also use maple syrup (same amount).
What size container do I need?
With all of the ingredients combined, the volume in my mason jar measures a little under 10 ounces. I use a 12 oz jar in my photos. This gives you plenty of room to stir and add extra toppings.
If you plan to increase the serving size or add lots of toppings, you'll have more room in a 16 oz wide-mouth mason jar for overnight oats. Generally, this is my go-to size.
I prefer a wide-mouth jar because it's easier to get your spoon in and out of the jar to mix the ingredients. With the peanut butter, you definitely want some wiggle room because you have to mix a lot. You could also use a bowl and cover it with cling wrap.
Store leftovers in the fridge. Good for up to 4 days.
Peanut Butter Overnight Oats
- ½ cup old fashioned oatmeal
- ½ cup almond milk unsweetened vanilla
- ¼ cup Greek yogurt plain
- 3 tablespoon creamy peanut butter
- 1 tablespoon honey
- ¼ teaspoon pure vanilla extract
- ⅛ teaspoon salt
- 1 pinch cinnamon
- Add all of the ingredients to a 12 oz or 16 oz jar or bowl and stir to combine until peanut butter is completely incorporated.
- Cover and refrigerate overnight or a minimum of four hours.
- Remove from the fridge, stir the oatmeal, and serve.