If you’re looking for an easy, affordable, fiber-packed breakfast you can prep in minutes, this blueberry overnight oatmeal checks every box.
Made with whole-grain oats, antioxidant-rich blueberries, and naturally sweetened with ripe banana, this blueberry overnight oatmeal recipe is creamy, satisfying, and perfect for busy mornings. In less than 5 minutes, you can prep a few jars on Sunday and have a healthy breakfast ready all week.
Whether you’re searching for blueberry overnight oats for meal prep, a nutritious high-fiber breakfast, or simply a way to use up fresh or frozen blueberries, this recipe delivers.
Quick Look at the Recipe
Prep Time: 5 minutes
Chill Time: At least 6 hours (overnight)
Servings: 1 jar (easy to scale for the week)
Method: No-cook, refrigerator
Highlights: High fiber, naturally sweetened, vegan, gluten-free option, meal-prep friendly
Where My Love for Blueberries Really Took Off!
Blueberries are easily one of my favorite fruits. I use them almost daily — in my blueberry smoothie, tossed into salads like my detox mason jar salad, and especially in this blueberry overnight oatmeal sweetened with banana.
Living in Buffalo, New York, blueberry season only lasts about 2–3 weeks each year. Because of that, I mostly rely on frozen organic blueberries. I’ll grab large bags from Costco or BJ’s, or if I get motivated during peak season, I’ll freeze fresh-picked berries so I can use them year-round.
Frozen berries work beautifully in this recipe because as they thaw, their juices release right into the oats, giving you that rich blueberry flavor without any extra effort.
If you’re using overnight oats to lose weight, this is a fantastic base recipe. It’s naturally sweetened, high in fiber, and keeps you full. And if you want to increase the protein, you can easily stir in cottage cheese like I do in my cottage cheese overnight oats or Greek yogurt like in my overnight oats with yogurt recipe.
I’ve made plenty of fruity overnight oats over the years – strawberry banana overnight oats, strawberry cheesecake overnight oats, cherry overnight oats, raspberry overnight oats – but if I had to choose one I make most often, this blueberry overnight oats recipe is definitely at the top of my list.
Enjoy!
Ingredients
You’ll find the exact measurements in the recipe card below, but here’s why each ingredient matters.
- Rolled Oats. Old-fashioned rolled oats are the only oats I recommend for overnight oats. Instant oats turn mushy, and steel-cut oats stay too firm. Rolled oats absorb the liquid perfectly and create that creamy texture overnight. If you’re gluten-sensitive, make sure to purchase certified gluten-free oats.
- Chia Seeds. Chia seeds are my go-to superfood for overnight oats. They add fiber, plant-based protein, and omega-3 fatty acids, but what I really love is the texture they create. Without chia seeds, overnight oats tend to be softer and almost mushy. With them, you get that thick, pudding-like consistency.
- Almond Milk (or Milk of Choice). I typically use unsweetened almond or coconut milk because that’s what I keep on hand for smoothies. But you can absolutely use dairy milk or even a high-protein dairy milk if you want to increase the protein content.
- Banana. Mashed ripe banana sweetens this recipe naturally so you don’t need refined sugar. I often freeze ripe bananas so I always have them ready for overnight oats or smoothies.
- Vanilla Extract. Not required, but highly recommended. It adds warmth and depth. If you’re out, the recipe will still work just fine.
- Blueberries. Fresh or frozen both work. I mostly use frozen because they’re affordable and the juices release overnight, giving the oatmeal incredible blueberry flavor. If you have fresh berries, you can freeze the blueberries yourself to enjoy year-round.
Want the Same Ingredients & Supplies I Use?
If you’re curious about the exact brands of oats, chia seeds, jars, and superfoods I use for my overnight oats recipes, you can browse my Amazon storefront. I keep all of my favorite pantry staples and meal prep supplies organized there to make it easy.
How to Make Blueberry Overnight Oatmeal (Step-by-Step)
Step 1: Mix the Base. In a 16-ounce mason jar (or container with a lid), combine the rolled oats, chia seeds, almond milk, vanilla extract, and mashed banana. Stir everything really well so the oats are fully submerged in liquid. Any dry oats sitting above the milk won’t soften properly overnight, so take an extra few seconds here to mix thoroughly.
Step 2: Add the Blueberries. Gently place the blueberries on top. If you’re using frozen blueberries, there’s no need to thaw them first. They’ll slowly thaw overnight and release juices directly into the oats, giving you that beautiful purple swirl in the morning.
Step 3: Refrigerate. Seal the jar tightly and refrigerate for at least 6 hours or overnight. During this time, the oats soften, the chia seeds thicken the mixture, the banana sweetens everything naturally, and the blueberries infuse flavor throughout.
Step 4: Adjust & Enjoy. In the morning, give everything a good stir. Overnight oats always thicken in the fridge, so if it feels too thick for your liking, add a splash of milk and stir until you reach your desired consistency. Taste it before adding any sweetener – the banana usually does the job, but you can stir in 1–2 teaspoons of pure maple syrup if needed.
Expert Tips
- I love using 16-ounce jars because they’re perfect for portion control and grab-and-go mornings, but you don’t have to prep them individually. You can easily double, triple, or even quadruple this blueberry overnight oatmeal recipe and mix everything together in a larger sealed glass container. In the morning, just scoop out the portion you want and add a splash of milk if needed. This is a great option if you’re feeding multiple people or just prefer not to prep separate jars ahead of time.
- If you want to increase the protein without changing the flavor too much, you can stir in a couple of tablespoons of Greek yogurt or about ¼ cup of cottage cheese. Both options add protein and creaminess. If you prefer powders, you can mix in collagen or an unflavored protein powder — just start small and add a splash of extra milk if the oats become too thick.
- You can also boost the nutrition by adding other superfoods. Hemp hearts, ground flaxseed, a spoonful of nut butter, or even a sprinkle of cinnamon all work well with blueberries. Just remember that every add-in slightly changes the texture, so adjust the liquid as needed to keep it creamy.
How to Store Blueberry Overnight Oatmeal
Overnight oats are meant to be made ahead. Store sealed jars in the refrigerator for up to 4 days. They’re best on days 1–3, but still safe and tasty on day 4. The longer they sit, the thicker they become. Just stir in a splash of milk to loosen them up.
You can also freeze dry overnight oat kits (oats, chia, blueberries). When ready to eat, add milk and banana, refrigerate overnight, and enjoy the next morning.
Other Overnight Oats Recipes
- Pumpkin overnight oatmeal
- Vanilla overnight oats
- Apple cinnamon overnight oats
- Peanut butter overnight oats
- Overnight Oats with Pb2
See all of our healthy oatmeal recipes.
Blueberry Overnight Oatmeal
Video
Equipment
- 16-ounce mason jars
- mason jar lids
Ingredients
- 1/2 cup rolled oats
- 1 teaspoon chia seeds
- 1/2 cup unsweetened almond milk or use your favorite milk
- 1/4 teaspoon pure vanilla extract
- 1/2 of a small banana mashed
- 1/2 cup of blueberries fresh or frozen
- pure maple syrup optional
Instructions
- In a 16-ounce mason jar comine and mix the rolled oats, chia seeds, unsweetened coconut milk, vanilla extract, and mashed banana.
- Place the blueberries on top of the oats.
- Tightly place the lid on the mason jar and store it in the refrigerator overnight.
- Stir the oats and add in extra liquid or pure maple syrup to loosen up the oats. Enjoy it cold.
Notes
Nutrition
Did you make this recipe?
If you tried this blueberry overnight oatmeal recipe, I’d love to hear how it turned out! Leave a comment and star rating below — it helps others find the recipe and gives them confidence to try it. And if you added your own twist, share it!
Chinazor says
Overnight oats is my new crave. Banana and blueberry are some of my favorite fruits. They are quite sweet and helps me handle my sweet tooth.
I have a feeling that I am going to totally love this.
LaVerne Green says
Do you cook the oatmeal first ?
Tammy Kresge says
No the oatmeal “cooks” as it sits in the liquid overnight.
Maureen says
Tried overnight oats for the first time, and this recipe was delicious! Loved the blueberries and banana together!!
Lorraine says
Thanks for the recipe – currently eating it now. How many grams of sugar per jar/serving?
@wordsprouts says
I followed the directions exactly since this is my first time making overnight oats. This morning, after almost 11 hours in the fridge, the oats we’re exactly like they were last night. The coconut milk got solid or thick from getting cold in the fridge. Should I have stirred it? The directions said to do that after it sat all night.
Thanks!
Tammy Kresge says
Did you the coconut in the can or carton? The coconut milk in the carton should not get solid. If it thickens up I will add a little more milk to loosen it up in the morning and that should do the trick.
Christina says
I love your overnight oats recipes i have tried several of them and love each one I have made, I also really like your baked oatmeal as well. The blueberry banana overnight oats is one of my favorite recipes.
Tammy Kresge says
Great! Thank you!
Eva says
I didn’t think I would like cold oatmeal, but I have to say this was delicious!!! Surprisingly the bananas did not turn brown. A new breakfast favorite!
Kari says
Do the bananas not turn brown and slimy? That’s my only fear…
Tammy Kresge says
That hasn’t been my experience.
Vickie says
This sounds so yummy. My husband would love this! Great recipe!
Sarah says
Are you adding 1 tsp of chia seeds or 1 tbs to get to 8 g of protein?
Tammy Kresge says
I add 1 teaspoon.
Renee says
Can you leave out the maple syrup as I don’t have any and can I use Almond milk as that is what I have on hand? Were supposed to get a snow storm tonight into tomorrow and I was gonna fix it for breakfast.
Thanks in advance. Renee
Tammy Kresge says
The maple syrup provide the sweetness so as long as that doesn’t bother you.
Jenn says
When do you add in the vanilla? I did not see that in the instructions.
Tammy Kresge says
Vanilla gets stirred in with the other liquids. Sorry about that I will fix the recipe.
Annie says
Most I have used need to be cooked first. What are you doing with the oats? Just putting them in dry? Also what brand do you use?,Awesome Idea.
Tiffany says
This is on my snack list tonight. Thanks for sharing Tammy 🙂
mary alice bitner says
Great Breakfast ideas!! I am trying to take off 20 lbs and I am 54 years old, the older you get the harder it is to take off. Anyhow…I am going to try these great overnight oats recipes and along with better meal choices, drinking more water and riding my bicycle daily this should be accomplished. Any helpful information would be greatly appreciated.
Eleanor Mcgahee says
You will drop the weight very quickly by not eating sugar. I stopped eating sugar because of high cholesterol, and dropped 20 lbs in a month and lowered my cholesterol 70 points in 6 months! I am at my ideal weight for the first time in years! Now I just avoid things with added sugar and eat overnight oats every morning.
Carrie Solomon says
This looks so yummy! I really like blueberries and bananas together, too. Do you have to used rolled oats or could you use any type of oat?
Tammy Kresge says
I find that rolled oats work the best.
Eva says
I used old-fashioned oats and it worked perfectly!