Overnight Oats · Peanut Butter Banana
Peanut Butter Banana Overnight Oats
Creamy oats soaked overnight with peanut butter and mashed banana, then topped with fresh slices in the morning. Five minutes of prep the night before means breakfast is ready when you are.
- Prep
- 5 min
- Cook
- 0 min
- Total
- 6 hr 5 min
- Serves
- 2 jars
- Level
- Easy
Ingredients
- 1 medium banana, ripe, divided
- 2 tbsp peanut butter
Swaps for peanut butter
Instead of peanut butter
- Sunflower seed butter: The same amount. Earthier and a little sweeter.
- Almond or cashew butter: The same amount. Milder and less salty (add a pinch of salt).
- Soy nut butter: The same amount. Close in taste and texture; contains soy.
Cooking for an allergy? Check every label.
- 1 cup rolled oats, old-fashioned ≈ 81 g
Swaps for rolled oats
Instead of oats
- Quick oats: The same amount. Softer, more cake-like cookies and bars with less chew; mushy in granola and overnight oats.
- 1 cup milk
Swaps for milk
Instead of milk
- Unsweetened soy milk: The same amount. The closest plant milk for baking: its protein helps things brown and set.
- Unsweetened oat milk: The same amount. Creamy and mild with a hint of sweetness.
- Unsweetened almond milk: The same amount. Thinner and less rich, so cakes are a little paler and drier.
Cooking for an allergy? Check every label.
- ½ cup greek yogurt, plain or vanilla
Swaps for greek yogurt
Instead of yogurt and Greek yogurt
- Regular yogurt, strained: About 1⅓ cups regular yogurt for each cup of Greek. Close to Greek yogurt once strained; unstrained, dips and sauces come out runny.
- Sour cream: The same amount. Richer and less tangy.
- Plant-based yogurt: The same amount, plain and unsweetened. Coconut yogurt is rich but tastes of coconut; soy yogurt is closest in protein.
More for yogurt and Greek yogurt
Cooking for an allergy? Check every label.
- 1 tbsp chia seeds (optional)
- 1 tbsp maple syrup, or honey
Swaps for maple syrup
Instead of maple syrup
- Honey: The same amount. Thicker and sweeter, browns faster, and it isn't vegan.
- Agave syrup: The same amount. Sweeter, with no maple taste.
- Pancake syrup: The same amount. Sweeter and flatter in flavor (it is mostly corn syrup); fine on pancakes, not great in baking or glazes.
- ¼ tsp ground cinnamon
Swaps for ground cinnamon
Instead of cinnamon
- Pumpkin pie spice or apple pie spice: The same amount. Mostly cinnamon, with ginger, nutmeg and allspice or cloves: a little spicier.
- Ground allspice or nutmeg: About ¼ the amount. Much stronger and different, but warm in the same way.
- 1 pinch kosher salt
Swaps for kosher salt
Instead of salt
- Table salt or fine sea salt: About half as much as Diamond Crystal kosher, about ¾ as much as Morton kosher. The same saltiness when measured this way.
- Salt by weight: 1 tsp is about 6 grams of table salt, 5 grams of Morton kosher, 3 grams of Diamond Crystal kosher. The most reliable way to swap, especially in baking and brines.
Missing something? Tap Swaps next to an ingredient, or see all substitutions.
Steps
Kid helper. A child can do steps 1, 2, 3, 4, 5 and 6: no knife, no heat. Steps marked “Grown-up” use a knife or heat. Cooking with kids
- Mash half the banana in a medium bowl with a fork until mostly smooth.Kid step
- Add the peanut butter and stir it into the banana until combined.Kid step
- Add the oats, milk, yogurt, chia seeds (if using), maple syrup, cinnamon and salt. Stir until no dry oats remain.Kid step
- Divide between 2 jars or containers and close the lids.Kid step
- Refrigerate overnight, or at least 6 hours, so the oats soften.⏱ Soak: 6 hrKid step
- In the morning, stir each jar. Add a splash of milk if it's thicker than you like.Kid step
- Grown-up: knife, heatthe rest of the banana over the top and eat cold, or microwave 1 to 2 minutes if you like it warm.
Slice (how to slice)
Slice Cut food into flat pieces of the same thickness. 1. Give round food a flat side to sit on.2. Hold it with your fingertips curled under.3. Cut with long strokes, pushing the knife forward and down rather than straight down.4. Move your guiding hand back the same distance each time so every slice matches. Done when: The slices are even. For meat, slicing across the grain (across the lines of muscle) gives the tenderest bite. Safety: Keep the fingertips of your guiding hand curled under, knuckles toward the blade, and set the board on a damp towel so it can't slide. Slice hot roasts on a board with a groove for the juices.How to slice evenly: mistakes to avoid
Tap an underlined word for how to do it, or see all techniques.
Tips
- For a nut-free version, use sunflower seed butter.
- Stir the peanut butter into the banana first. It blends in smoothly instead of staying in clumps.
Storage
Refrigerate up to 3 days. Add the fresh banana slices just before eating so they don't brown.
Make ahead
Make up to 3 jars at a time for the work or school week.
How long leftovers keep, and freezing and reheating: leftovers and storage.
Quick answers
- Can I make it ahead?
Make up to 3 jars at a time for the work or school week.
- What can I swap?
- Instead of peanut butter: Sunflower seed butter, the same amount.
- Instead of oats: Quick oats, the same amount.
Cooking for an allergy? Check every label.
Answered from this recipe's own storage, make-ahead and swap notes.
Estimated nutrition per serving
- Calories
- 460 1,920 kJ
- Protein
- 19 g
- Carbohydrates
- 60 g
- Fiber
- 7 g
- Sugars
- 24 g
- Fat
- 18 g
- Saturated fat
- 6 g
- Sodium
- 200 mg
Whole recipe, 2 servings: about 930 calories.
Estimate from USDA FoodData Central; not medical or dietary advice. Based on 8 of 8 ingredients.
How we estimate
We add up USDA FoodData Central values for each measured ingredient as written and divide by the recipe's 2 servings, so changing the servings or units here doesn't change a serving. Brands, swaps, trimming and cooking all change the real numbers.
Not counted: chia seeds (optional).
Estimated cost
About $1.10 a serving
About $2.15 for the recipe as written (2 servings).
Estimate; prices vary by store and region. U.S. average prices for September 2026 from BLS Average Price Data and USDA ERS Purchase to Plate prices updated with the BLS Consumer Price Index. Priced: 5 of 8 ingredients, 97% by weight.
How we estimate
Each measured ingredient is weighed as in the nutrition estimate and priced at the U.S. average: BLS's average price where BLS publishes one, else USDA ERS's Purchase to Plate price for 2017-18 raised to September 2026 with the CPI for that food group. Whole packages, store brands, sales and regions all change the real cost: treat it as a ballpark.
- greek yogurt $0.95 ERS
- rolled oats $0.50 ERS
- banana $0.25 ERS
- milk $0.25 BLS
- peanut butter $0.20 ERS
Not priced (no official average price we can match, so not in the total): maple syrup, ground cinnamon, kosher salt.
Not counted: chia seeds (optional, or to taste).
More dishes for less: cheap eats.
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Gear for this recipe
- See price on Amazon: Pint mason jars with lids (opens Amazon)
- See price on Amazon: Nesting mixing bowls (opens Amazon)
- See price on Amazon: Measuring cups and spoons (opens Amazon)
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Cleanup score 5/5 (very easy cleanup): 1 thing to wash, mixing bowl.
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