Blueberry Overnight Oats – Healthy Seasonal Recipes

Blueberry overnight oats are a great make-ahead breakfast packed with protein that will fuel you all morning. Whether you make these overnight oats when blueberries are in season or you make this recipe with frozen berries, it is a delicious meal prep breakfast the whole family enjoys. 

a couple of glasses with mashed blueberries on the bottom, overnight oats layered on top, and fresh blueberries on the top. There is a clear bowl of blueberries to the right in the background, some spoons on the left, and honey leaking off of a honey spoon in the foreground

Why We Love This Recipe For Blueberry Overnight Oats

Coming up with quick and easy breakfast recipes for your busy mornings is important to us at HSR because we always strive to make your life easier! A few months ago we got on a real oats kick after making our strawberry overnight oats recipe and subsequently trying a similar recipe for raspberry overnight oats. So, it should come as no surprise that we had to make blueberry overnight oats.

Recipe Highlights

  • Just a few minutes of prep!
  • Protein-rich and a great source of fiber
  • Chia and flax seeds have lots of health benefits!
  • Blueberries are sweet and nutritious and high in antioxidants
  • Super customizable recipe – you can add your favorite toppings!
  • Super kid-friendly breakfast
  • It’s easy to make it a vegan option via dairy-free yogurt and milk
  • It makes for a delicious, easy breakfast treat

Ingredients for This Blueberry Overnight Oats Recipe

ingredients for blueberry overnight oats: honey, flax and chia seeds, rolled oats, greek yogurt, blueberries, and milk
  • Blueberries: We use fresh, sweet blueberries plus some more for garnish.
  • Oats: We prefer to use rolled oats in our over night oats, but if you happen to have quick oats or instant oats they work too. Read more in our expert tips section.
  • Milk: Feel free to use fat-free milk if desired, or you can swap out dairy milk for unsweetened plant-based non-dairy milk like almond milk, oat milk, or soy milk.
  • Greek Yogurt
  • Seeds: We used chia Seeds and ground flax seeds in this formula, but they are optional, and we have lots of other ideas for mix-ins in the FAQ section.
  • Honey

How to Make Overnight Oats (step by step)

Step 1 on the left with a bowl full of mashed blueberries. Step 2 is on the right with a bowl full of the overnight oat mixture topped with flax and chia seeds

Step 1:  Prepare Blueberries and Jars

Mash the blueberries with a fork or potato masher in a small bowl. Add the honey and then stir the mixture together until combined. Divide the blueberry mixture among two pint-sized jars (mason jars work well for this).

Step 2: Combine Oat Mixture

Stir the oats, milk, and yogurt together in the bowl. Add in the seeds and stir again. 

Step 3 on the left is the overnight oats being spooned on top of the mashed blueberry mixture and step 4 on the right is the jar of overnight oats after it has refrigerated throughout the night and then been stirred up and topped with blueberries

Step 3: Add Oats to Jar + Refrigerate

Spoon the oat mixture into your mason jar over the blueberries. Cover and refrigerate for 12 to 24 hours (or up to 4 days.)

Step 4: Serve

Stir your overnight oatmeal before serving and garnish with whole berries if desired. Enjoy!

An overhead shot of fresh blueberries on top of overnight oats with green garnish and a spoon in one of the jars

FAQs and Expert Tips

Are overnight oats healthy?

This overnight oats recipe is pretty darn healthy! We believe in balance here at HSR, and this recipe certainly provides a healthy dose of it. The oats contain fiber and protein, in addition to various vitamins and minerals. The blueberries contain loads of antioxidants of course, and the honey allows us to skip artificial sugar.

Can overnight oats be made with quick oats?

Yes, you can make overnight oats with quick cook oats (or instant oats!) in place of rolled oats.

How long do overnight oats last?

These blueberry overnight oats last for about four days in an airtight, resealable container in the refrigerator. You can make a huge batch of them and enjoy them for most of the week!

What oats are good for overnight oats?

Our favorite choice for this overnight oatmeal recipe is old-fashioned rolled oats. They easily absorb the liquid from the milk and mashed blueberries overnight and result in a delightfully fully smooth texture. You could also use quick-cook oats or instant oats, but we’d recommend enjoying them the very next day. Allowing them to sit for multiple days runs the risk of them getting too mushy. One you absolutely cannot use is steel cut oats because they require heat and cooking to soften and become palatable. 

How long before overnight oats are ready?

Your blueberry overnight oats should rest in the refrigerator for at least 12 hours before enjoying them. That way all of the simple ingredients will meld together in the most delicious way!

Can I use water instead of milk in overnight oats?

If you don’t want to use any milk at all, you can use water in your overnight oats with blueberries recipe. However, we suggest trying unsweetened plant-based milk if you’re averse to dairy. Coconut milk is delicious and full of healthy fats, and the milk helps the oats come out creamier. 

Topping Ideas

  • Top your oats with other berries like strawberries, raspberries, etc.
  • A great way to add more texture and healthy fats is with some sliced or chopped almonds, pecans, or peanuts.
  • In addition to chia and flax seeds, you could also use pepitas (pumpkin seeds)!
  • Chocolate chips would add a bit of sweetness and fun to these oats.
  • Sprinkle on some coconut flakes or shavings, especially if you use coconut milk and want to emphasize the flavor some more!
  • Use additional sweeteners like honey, agave nectar, brown sugar or maple syrup if you want a drizzle of sweetness on top.
  • Speaking of drizzle – melt some peanut butter or almond butter (or Nutella!) and add it to the top of your oats.

Meal Prep Tips

Your overnight oats can be refrigerated for up to 4 days! Beyond that, they will get a bit too mushy and you risk the blueberries going bad. You can easily make a double or triple batch if you have more people in your household enjoying these yummy overnight oats, and you can use small jars to make them a grab-and-go single-serve breakfast.

Substitutions and Variations To Try

  • We use fresh, juicy blueberries in this recipe, but you can also use frozen blueberries! They’re great for overnight oats because they can thaw in the fridge overnight and meld with your oats.
  • If you’re looking for a little more flavor emphasis, add vanilla extract to your oat mixture before spooning it on top of the berries.
  • Although Greek plain yogurt already has protein in it, you might want an extra boost! Mix your favorite protein powder into your creamy yogurt to add some flavor and nutrition.
  • Make vegan overnight oats by using dairy-free yogurt, dairy-free milk, and maple syrup instead of honey!
  • Instead of chia seeds or flax seeds try hemp hearts, pepitas, sunflower seeds or another type of seed that you prefer.
  • Add banana slices since blueberry and banana are such a great complement to each other.
  • Whip up a simple lemon blueberry compote by adding lemon juice (and a little zest) to your mashed blueberries!

Additional Breakfast Recipes To Try

one of the jars of overnight oats after it has been refrigerated and then mixed with a spoon and topped with fresh blueberries

Thanks so much for reading! If you are new here, you may want to sign up for my email newsletter to get a free weekly menu plan and the latest recipes right to your inbox. If you make this recipe, please come back and leave a star rating and review. I would love to hear what you thought!

Happy Cooking! ~Katie


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Overnight oats are a great make-ahead breakfast packed with protein that will fuel you all morning. Whether you make these overnight oats when blueberries are in season or you make this recipe with frozen berries, it is a delicious meal prep breakfast the whole family enjoys. 

  • 1 cup blueberries, plus more for garnish
  • 2 tablespoons honey
  • 1 cup rolled oats
  • 1 cup milk, unsweetened plant based or dairy, fat-free if desired
  • ½ cup plain Greek Yogurt
  • 1 tsp each chia seeds and ground flax seeds

  1. Mash blueberries with a fork or potato masher in a small bowl. Stir together with honey. Divide among two pint sized jars.
  2. Stir the oats, milk and yogurt in the bowl. Add in seeds and stir again. 
  3. Spoon oat mixture into the jars over the blueberries. Cover and refrigerate for 12 to 24 hours (or up to 4 days.)
  4. Stir before serving and garnish with whole berries if desired.


Make Ahead: Overnight oats can be refrigerated for up to 4 days. You can double or triple the recipe for a larger batch. We recommend using small jars for an easy single serving. 

  • Prep Time: 10 mins
  • Active Time: 10 mins
  • Cook Time: N/A
  • Category: Breakfast and Brunch
  • Method: Refrigerate
  • Cuisine: American


  • Serving Size: 1 1/2 cups
  • Calories: 378
  • Sugar: 29 g
  • Fat: 10 g
  • Carbohydrates: 59 g
  • Fiber: 5 g
  • Protein: 15 g

Keywords: Blueberry Overnight Oats Recipe, Overnight Oatmeal, Overnight Oats Recipes

About the Author

Katie Webster

Katie Webster studied art and photography at Skidmore College and is a graduate of the New England Culinary Institute. She has been a professional recipe developer since 2001 when she first started working in the test kitchen at EatingWell magazine. Her recipes have been featured in numerous magazines including Shape, Fitness, Parents and several Edible Communities publications among others. Her cookbook, Maple Quirk Books was published in 2015. She launched Healthy Seasonal Recipes in 2009. She lives in Vermont with her husband, two teenage daughters and two yellow labs. In her free time, you can find her at the gym, cooking, stacking firewood, making maple syrup, and tending to her overgrown perennial garden.

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