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Peanut butter overnight oats in mason jar topped with banana slices

Peanut Butter Overnight Oats

Peanut butter overnight oats are creamy, filling, and packed with rich nutty flavor. Made with rolled oats, milk, and peanut butter, this no-cook breakfast is perfect for meal prep and can be customized for high-protein or lighter variations.
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Course: Breakfast
Cuisine: American
Prep Time: 5 minutes
Servings: 1 jar
Calories: 340kcal
Author: Chloe White
Cost: $1

Equipment

  • mason jar or airtight container
  • – Mixing spoon

Ingredients

  • 1/2 cup old-fashioned rolled oats
  • 3/4 cup milk (dairy or non-dairy)
  • 1 tbsp peanut butter
  • 1-2 tsp sweetener (optional)
  • 1/4 cup Greek yogurt (optional)

Instructions

  • Add rolled oats to a mason jar or airtight container.
  • Pour in milk and stir to combine.
  • Add peanut butter and mix thoroughly until fully incorporated.
  • Add sweetener or Greek yogurt if using and stir until evenly combined.
  • Cover and refrigerate for at least 4 hours or overnight.
  • Stir before serving and adjust consistency with a splash of milk if needed. Add toppings as desired.

Notes

Use old-fashioned rolled oats for best texture. Soak at least 4 hours or overnight. Peanut butter thickens as it chills, so stir well before serving and add 1–2 tablespoons milk if too thick. For a thicker texture without chia seeds, slightly reduce milk or add 1 tablespoon Greek yogurt. Store in airtight jars up to 4 days. Freezing is not recommended as it may affect texture.

Nutrition

Calories: 340kcal | Carbohydrates: 42g | Protein: 13g | Fat: 14g | Saturated Fat: 3g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 6g | Cholesterol: 5mg | Sodium: 150mg | Potassium: 420mg | Fiber: 6g | Sugar: 8g | Vitamin A: 150IU | Calcium: 220mg | Iron: 2mg