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Blueberry overnight oats in mason jar with fresh blueberries

Blueberry Overnight Oats

These blueberry overnight oats are a creamy, no-cook breakfast made with rolled oats, milk, and fresh or frozen blueberries. Ready in just 5 minutes of prep, they soak overnight for a soft, spoonable texture. Easily customize with yogurt for extra protein or keep them dairy-free for a lighter option.
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Course: Breakfast
Cuisine: American
Prep Time: 5 minutes
Total Time: 4 hours
Servings: 1 jar
Calories: 320kcal
Author: Chloe White
Cost: $1

Equipment

  • mason jar or airtight container
  • – Mixing spoon

Ingredients

  • 1/2 cup old-fashioned rolled oats
  • 1/2 cup milk (dairy or non-dairy)
  • 1/2 cup fresh or frozen blueberries
  • 1-2 tsp honey or maple syrup
  • 2 tbsp Greek yogurt (optional)
  • 1 tsp chia seeds (optional)

Instructions

  • Add rolled oats, milk, Greek yogurt (if using), honey, and chia seeds to a mason jar or bowl.
  • Stir thoroughly until all oats are fully coated and evenly mixed.
  • Fold in fresh or frozen blueberries, gently mixing to distribute throughout.
  • Seal the container and refrigerate for at least 4 hours or overnight until thick and creamy.
  • Stir before serving and adjust texture with a splash of milk if needed. Add extra toppings as desired.

Notes

Use old-fashioned rolled oats for best texture. Soak at least 4 hours, ideally overnight (8 hours). If too thick, stir in 1–3 tablespoons milk before serving. If too runny, add 1 teaspoon chia seeds and chill 30 minutes. Add fresh toppings just before serving. Store in airtight jars up to 4 days at 40°F or below.

Nutrition

Calories: 320kcal | Carbohydrates: 52g | Protein: 11g | Fat: 7g | Saturated Fat: 2g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 2g | Cholesterol: 5mg | Sodium: 90mg | Potassium: 320mg | Fiber: 7g | Sugar: 18g | Vitamin A: 150IU | Vitamin C: 8mg | Calcium: 180mg | Iron: 2mg