last updated on October 3, 2026

a serving of high fiber blueberry overnight oats

Being a busy + working mom, most mornings I need a breakfast that is easy and can fill me up. These high fiber blueberry overnight oats are my current obsession and my toddler is obsessed with them too, which is always a win.

These oats are creamy, lightly sweetened, and loaded with fiber thanks to the rolled oats and chia seeds. They take 10 minutes to prep and stay good for 4 days so they are perfect for meal prep. I always notice when I have these for breakfast I am full for much longer and they taste so good I genuinely look forward to eating them every morning!

ingredients needed for high fiber blueberry overnight oats

2 cups rolled oats
1/4 cup chia seeds
1/2 teaspoon cinnamon
Big pinch of salt
2 1/2–3 cups milk of choice
1–2 tablespoons maple syrup
1/2 teaspoon vanilla extract
1 cup frozen wild blueberries

I love using frozen wild blueberries because they break down slightly overnight and create the prettiest purple swirl throughout the oats. They also add incredible flavor without needing much sweetener.

how to make high fiber blueberry overnight oats

Place the rolled oats, chia seeds, cinnamon, and salt in a large sealable container. Stir to combine.
Add the milk, maple syrup, and vanilla extract. Stir again until everything is evenly mixed.
Fold in the frozen blueberries.
Let the mixture sit for about 10 minutes, then stir once more. This helps prevent the chia seeds from clumping together.
Cover and refrigerate overnight.
The next morning, scoop out a serving and enjoy. If the oats are thicker than you like, simply stir in an extra splash of milk.

I love topping mine with extra blueberries and unsweetened shredded coconut.

container of high fiber blueberry overnight oats

how to add greek yogurt for extra protein

If you want to make these overnight oats even more filling, Greek yogurt is the easiest addition.

Simply stir in:

1/2 cup plain Greek yogurt to the full batch, or
2–3 tablespoons per serving, or
add a dollop on top!

Greek yogurt adds:

Extra protein
A creamier texture
A slight tanginess that balances the sweetness of the blueberries

Adding Greek yogurt can increase the protein content by roughly 5–8 grams per serving depending on the brand you use, so you’re getting a boost of fiber + protein to start off your morning.

For an even bigger protein boost, you can also add:

Vanilla protein powder
Hemp seeds
Collagen peptides
High-protein milk like ultra-filtered milk or soy milk

how much fiber is in each serving?

Each 1-cup serving contains approximately 8–10 grams of fiber, depending on the milk and optional toppings used. The daily recommended intake is around 25 grams of fiber per day (depending on your age and gender) so these oats really jumpstart your day! I like to top mine with extra frozen blueberries (1/2 cup has 2 grams of fiber) or fresh blackberries (1/2 cup has 4 grams of fiber) for even more fiber to start my day.

why fiber is so important

Fiber is definitely the trendy topic of this year, but it’s so much more than a trend and should really be here to stay! Fiber is one of those nutrients many people don’t get enough of, yet it plays such an important role in overall health.

Getting enough fiber may help:

Support healthy digestion
Promote balanced blood sugar levels
Keep you feeling full longer
Support heart health
Feed beneficial gut bacteria

Starting your day with a high fiber breakfast like overnight oats is an easy way to help meet your daily fiber goals without even thinking about it. Protein is important too (and very trendy right now), but fiber is crucial!

substitutes for frozen blueberries

If you can’t find frozen blueberries, or don’t like them, swap them out! These overnight oats are incredibly flexible so use what you like best.

Try using:

Frozen mixed berries
Raspberries
Strawberries
Blackberries
Cherries
Diced peaches
Mango
Banana slices

tips for the best overnight oats

Use rolled oats for the best texture. Quick oats become too soft.
Adjust the milk depending on how thick you like your oats.
Stir twice before refrigerating to evenly distribute the chia seeds.
Overnight oats keep well in the fridge for up to 4 days, making them perfect for meal prep.

frequently asked questions

can I make these overnight oats dairy-free?

Absolutely. Almond milk, oat milk, soy milk, or coconut milk all work well in this recipe.

Can I use fresh blueberries instead of frozen?

Yes. Fresh blueberries work perfectly, though frozen blueberries soften more overnight and create a richer blueberry flavor throughout the oats.

How long do overnight oats last?

They’ll stay fresh in the refrigerator for up to 4 days in an airtight container.

Can I warm overnight oats up?

Definitely. I prefer them cold, but you can microwave them for about 30–60 seconds if you prefer a warm breakfast.

other breakfast recipes you’ll love

high fiber blueberry overnight oats

Name: high fiber blueberry overnight oats
Prep time: 10 min
Total time: 10 min
Ingredients: 2 cups rolled oats; 1/4 cup chia seeds; 1/2 teaspoon cinnamon; big pinch of salt; 2 1/2 –3 cups milk of choice; 1 –2 tablespoons maple syrup; 1/2 teaspoon vanilla extract; 1 cup frozen wild blueberries

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Prep Time 10

Total Time 10

Servings 5 servings

ingredients

2 cups rolled oats
1/4 cup chia seeds
1/2 teaspoon cinnamon
big pinch of salt
2 1/2 –3 cups milk of choice
1 –2 tablespoons maple syrup
1/2 teaspoon vanilla extract
1 cup frozen wild blueberries

instructions

Place the rolled oats, chia seeds, cinnamon, and salt in a large sealable container. Stir to combine.
Add the milk, maple syrup, and vanilla extract. Stir again until everything is evenly mixed.
Fold in the frozen blueberries.
Let the mixture sit for about 10 minutes, then stir once more. This helps prevent the chia seeds from clumping together.
Cover and refrigerate overnight.
The next morning, scoop out a serving and enjoy. If the oats are thicker than you like, simply stir in an extra splash of milk.