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Easy 4-Ingredient Peanut Butter Banana Overnight Oats Recipe for Quick Healthy Breakfast

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A quick and healthy overnight oats recipe using just four simple ingredients: peanut butter, banana, rolled oats, and milk. Perfect for busy mornings and easy to customize.

Ingredients

Scale
  • ½ cup (45g) rolled oats (old-fashioned recommended)
  • ½ cup (120ml) milk (dairy or plant-based like almond, oat, or soy)
  • 2 tablespoons (about 32g) peanut butter (creamy or chunky, natural preferred)
  • 1 medium ripe banana, mashed

Instructions

  1. Peel and mash 1 medium ripe banana in a mixing bowl using a fork until smooth but still slightly chunky (1-2 minutes).
  2. Add 2 tablespoons of peanut butter to the mashed banana and stir well to combine (about 1 minute).
  3. Mix in ½ cup rolled oats and ½ cup milk until all oats are coated and mixture is creamy and slightly loose (1-2 minutes).
  4. Transfer the mixture into a mason jar or airtight container and seal the lid tightly. Optionally, add a few banana slices on top before sealing.
  5. Refrigerate the jar for at least 6 hours or overnight to allow oats to soak and flavors to meld.
  6. Serve chilled straight from the fridge or warm in the microwave for 30-45 seconds before eating.

Notes

Use old-fashioned rolled oats for best texture; avoid instant oats to prevent mushiness. If banana is not ripe, add a drizzle of honey or maple syrup for sweetness. Warm peanut butter slightly if too thick for easier mixing. For creamier oats, add a tablespoon of Greek yogurt or extra milk before refrigerating. Prepare multiple jars ahead for grab-and-go breakfasts. Store leftovers in fridge up to 3 days. Stir in milk before reheating if oats thicken.

Nutrition

Keywords: overnight oats, peanut butter, banana, healthy breakfast, quick breakfast, easy recipe, no-cook breakfast