Blueberry Overnight Oats

This post contains links to affiliate websites, such as Amazon, and we receive an affiliate commission for any purchases made by you using these links. We appreciate your support!

These blueberry overnight oats are perfect for meal prepping. Softened raw oats are layered with a simple homemade blueberry sauce for an easy make ahead breakfast or snack.

A jar of blueberry overnight oats topped with fresh berries and sprinkled with cinnamon.

Breakfast is the only meal I’ve ever successfully meal-prepped and oats are my number one go-to. They are a great healthy breakfast option that you can whip up on a Sunday night and they’ll last you for a couple of days!

I have always loved a good oatmeal recipe. Oats are healthy, delicious, and so easy to make that you just can’t hate them.

For these blueberry overnight oats, I didn’t just want some plain oats with a few blueberries stirred in. I really wanted a full-bodied blueberry flavor that would combine with the creamy oats to make something really special.

That’s how I came up with the layered blueberry sauce idea, and they turned out just as I imagined them!

What are overnight oats?

Overnight oats are made by soaking raw rolled oats in a liquid mixture for a few hours or overnight until the oats are softened and a pudding-like texture is achieved.

Overnight oats are often made with chia seeds which makes them extra pudding-like, but I prefer the texture without them personally. If you would like to add some chia seeds, you can stir in 1-3 tablespoons with the dry ingredients.

Unlike cooked oats, overnight oats retain some of their chewy texture and are a great way to prepare a healthy breakfast ahead of time.

Overnight oats are endlessly customizable and can be enjoyed with so many different flavors.

Can I Heat up Overnight Oats?

You can certainly warm them up before eating if you like! Most of the time overnight oats are eaten cold, but the blueberry sauce in this recipe is especially good warm.

You can transfer the oats to a bowl and heat in the microwave for a few seconds to heat through.

Spoonful of blueberry overnight oatmeal.

Are overnight oats healthy?

Raw oats are an excellent source of resistant starch. This weight-loss-friendly carbohydrate goes through your small intestine undigested until it reaches your colon.

The resistant starch functions as a food source for the good bacteria that live in your gut, helping to maintain a healthy microbial balance by providing a higher ratio of “good” to “bad” gut bacteria.

The bacteria convert the starch into digestive acids that have been found to decrease hunger and increase calorie burn.

Overnight oats are a great way of boosting your metabolism, so you can say they are one of the healthiest meals you can have, particularly in the morning.

I love to use blueberries in these overnight oats since they are packed with antioxidants, which remain even after being briefly cooked as in this recipe.

Close up of blueberry overnight oatmeal.

Ingredients Notes

Technically, you only need two ingredients to make overnight oats: oats and milk. But adding yogurt makes them even more creamy and delicious.

For these blueberry overnight oats, I love to use plump and sweet blueberries but any berry will work.


This recipe calls for old fashioned rolled oats for the best texture. You won’t get the same consistency and texture with quick oats or steel cut oats.

Note: Look for gluten-free oats if you have a gluten sensitivity.


You can use dairy or dairy-free milk (like almond milk, cashew milk, or oat milk). If you want to substitute the milk with water, you can do that too. I recommend using some type of milk for the creamiest texture.


This recipe uses vanilla Greek yogurt to give it a tangy flavor and even creamier texture. If you use a plain yogurt, which is unsweetened, you may want to increase the maple syrup a little, or drizzle some additional syrup on top when you serve them.

Vegan and dairy-free yogurt works great in this recipe too!


Both fresh and frozen blueberries can work great in this recipe. If you use frozen berries, you can skip the water when you are making the sauce.

Maple Syrup

A natural sweetener like maple syrup blends in beautifully with the blueberries and goes great with the oats. You can also substitute this for honey.

Step-by-step Blueberry Overnight Oats

Here is a step-by-step rundown of this simple recipe.

  1. Combine the blueberries, maple syrup, cornstarch, lemon juice, and water in a small saucepan.
Blueberries, cornstarch, maple syrup, and lemon juice in a saucepan.

2. Bring the mixture to a boil over medium heat, reduce to a simmer and let it thicken while stirring occasionally. Set aside to let it cool down to room temperature. You can pop it in the fridge to speed this up.

Cooking blueberry sauce.

3. Whisk the yogurt, milk, maple syrup, and vanilla in a bowl.

Bowl of milk, yogurt, maple syrup, and vanilla.

4. Add the oats, salt, and cinnamon to the milk mixture and stir. Let the oats soak up the liquid and thicken slightly (10-15 minutes)

Mixing oatmeal in the milk mixture.

5. Layer the oats mixture and blueberry sauce in small containers or jars.

Layering blueberry sauce in oatmeal.

6. Refrigerate overnight and serve with fresh fruits or toppings of your choice on top.

Other ways to prepare oats

Oats can be prepared in so many different ways. Overnight oats have a soft, almost pudding-like texture, although you still retain some of the chewy texture from the oats.

If you prefer a drier texture, you will love baked oats like these raspberry dark chocolate baked oats.

If you like them completely dry, this banana granola is insanely delicious and great for snacking. For a holiday-themed breakfast, try this gingerbread granola!

If you like the traditional oat preparation, try this sweet, buttery caramelized banana oatmeal.

And did you know that you can make the best fluffy oat flour pancakes with whole oats? Try them with the blueberry sauce from this recipe!

A jar of blueberry overnight oats topped with fresh berries and sprinkled with cinnamon.

Storing & Meal Prep


This is a great meal prep staple and can last for up to 3 days in the fridge. You can make them in a big batch for your multiple days or make a single serving to have for breakfast the next morning.


These overnight oats can also be frozen for up to several weeks. Be sure to let them soak overnight before freezing. Then just take them out a while before serving, let them defrost and enjoy.

A jar of blueberry overnight oats topped with fresh berries and sprinkled with cinnamon.

Blueberry Overnight Oats

These blueberry overnight oats are perfect for meal prepping. Softened raw oats are layered with a simple homemade blueberry sauce for an easy make ahead breakfast or snack.
5 from 1 vote
Print Pin Rate Save
Course: Breakfast, Breakfast/Brunch, Snack
Cuisine: American
Prep Time: 15 minutes
Chilling Time: 4 hours
Total Time: 4 hours 15 minutes
Servings: 4 servings
Calories: 329kcal
Author: Ann Otis


  • 2 cups blueberries fresh or frozen
  • 1/4 cup pure maple syrup
  • 1 tablespoon water skip if using frozen berries
  • 1 tablespoon cornstarch
  • 1 teaspoon fresh lemon juice
  • 1 cup vanilla Greek Yogurt
  • 1 cup milk
  • 1 tablespoon maple syrup
  • 2 teaspoons pure vanilla extract
  • 1 1/2 cups old-fashioned rolled oats
  • 1/4 teaspoon salt
  • 1/4 teaspoon cinnamon


  • In a small saucepan, combine the blueberries. maple syrup, cornstarch, lemon juice, and water (if using).
  • Bring to a boil over medium heat. Reduce heat to low and simmer for 5 minutes until thickened, stirring occasionally. Set aside to cool to room temperature (you can transfer the pot to the fridge for a few minutes to speed this up).
  • In a large bowl, whisk together the yogurt, milk, maple syrup, and vanilla.
  • Stir in the oats, salt, and cinnamon. Let the mixture sit for 10-15 minutes to thicken slightly.
  • Spoon the oats into half pint (250 ml) containers or jars, alternating with the blueberries.
  • Place lids on the jars or containers and refrigerate overnight, or up to 4 days before enjoying. Serve topped with fresh blueberries, bananas or other berries, if desired.



Overnight oats keep well in the refrigerator for 2-3 days, or in the freezer for up to 3 months (let them soak overnight before freezing).


Calories: 329kcal | Carbohydrates: 60g | Protein: 12g | Fat: 5g | Saturated Fat: 2g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Cholesterol: 10mg | Sodium: 194mg | Potassium: 309mg | Fiber: 5g | Sugar: 31g | Vitamin A: 177IU | Vitamin C: 8mg | Calcium: 175mg | Iron: 2mg
Tried this Recipe? Tag it Today!Mention @OurHappyMess or tag #OurHappyMess!

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *

Recipe Rating

This site uses Akismet to reduce spam. Learn how your comment data is processed.