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High-Protein Peanut Butter Overnight Oats for Easy, Healthy Mornings

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High-protein peanut butter overnight oats are a creamy, no-cook breakfast made with oats, peanut butter, and protein-rich ingredients, perfect for meal prep and busy mornings.

  • Author: Catherine
  • Prep Time: 5 minutes
  • Cook Time: 0 minutes
  • Total Time: 4 hours 5 minutes
  • Yield: 1 serving 1x
  • Category: Breakfast
  • Method: Marinated (No-Cook)
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

Scale
  • 1/2 cup old-fashioned rolled oats
  • 1 cup milk or unsweetened plant-based milk
  • 2 tablespoons natural peanut butter
  • 1 scoop vanilla or unflavored protein powder
  • 1 tablespoon chia seeds (optional)
  • 1/2 ripe banana, mashed or sliced (optional)
  • 1/2 teaspoon cinnamon (optional)
  • 1 teaspoon honey or maple syrup (optional)

Instructions

  1. Add the rolled oats to a jar or airtight container.
  2. In a separate bowl, whisk the milk and protein powder until smooth.
  3. Pour the milk mixture over the oats.
  4. Add peanut butter, chia seeds, banana, cinnamon, and sweetener if using.
  5. Stir well until all ingredients are fully combined.
  6. Cover and refrigerate for at least 4 hours or overnight.
  7. Stir before serving and add a splash of milk if needed for consistency.

Notes

  • Use rolled oats for best texture; avoid quick oats.
  • Natural peanut butter blends more smoothly.
  • Add toppings like nuts or seeds just before serving.
  • Adjust milk for thicker or thinner consistency.

Nutrition