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Delicious blueberry overnight oats in a jar topped with fresh blueberries

Blueberry Overnight Oats Jar

Bright, easy, and wildly forgiving, this Blueberry Overnight Oats Jar wakes up your morning with minimal fuss and maximum flavor. Creamy oats meet juicy blueberries for a refreshing and comforting breakfast that travels well.
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Prep Time 15 minutes
Total Time 8 hours
Servings: 2 servings
Course: Breakfast, Brunch
Cuisine: American
Calories: 320
Ingredients Method Notes

Ingredients
  

Base Ingredients
  • 1 cup rolled oats Old-fashioned rolled oats work best; gluten-free if needed.
  • 1 cup milk or plant-based milk Use whole milk for creaminess or almond/oat milk for a lighter texture.
  • 1/2 cup Greek yogurt (optional) Plain yogurt works best; can be substituted with plant-based yogurt.
  • 1 cup fresh blueberries Look for plump, firm berries; frozen can be used but will change texture.
  • 1–2 tablespoon honey or maple syrup Adjust sweetness to taste.
  • 1/2 teaspoon vanilla extract
  • 1 pinch salt Enhances sweetness.

Method
 

Preparation
  1. Measure the rolled oats into a mason jar or airtight container.
  2. Add the milk, Greek yogurt (if using), honey or maple syrup, vanilla extract, and a pinch of salt. Stir thoroughly until the oats are evenly saturated and the sweetener is dissolved.
Adding Blueberries
  1. Gently fold in most of the fresh blueberries, leaving a few for topping in the morning.
  2. Press the berries slightly into the oats without crushing them completely.
Chill
  1. Cover the jar with a lid and refrigerate for 6–8 hours or up to 48 hours.
Serving
  1. Stir the oats and adjust the consistency with milk if too thick.
  2. Top with reserved blueberries and enjoy.

Notes

Chill time of 6–8 hours is recommended for perfect texture. Adjust sweetness and toppings before serving. For meal prep, jars can be prepared up to 48 hours in advance.