Chocolate Blueberry Overnight Oats

Here is my favorite blueberry overnight oats recipe, with creamy yogurt, rolled oats, vanilla, maple syrup, and fresh blueberries topped with dark chocolate.

These overnight oats are my go-to breakfast when I need something quick and filling in the morning. I make a big batch on Sunday night so we can grab them straight from the fridge all week long. Nothing better than chocolate for breakfast, right?

What Kind of Oats Should I Use?

For overnight oats, you’ll want to stick with old-fashioned rolled oats rather than quick oats or steel-cut oats. Rolled oats have the perfect texture that softens nicely overnight without turning mushy, giving you that creamy consistency everyone loves. Quick oats tend to get too soggy and lose their texture, while steel-cut oats won’t soften enough and will stay too chewy. You can find rolled oats at any grocery store, and they’re usually labeled as “old-fashioned oats” on the container. If you’re gluten-free, just make sure to grab a package that’s certified gluten-free, since oats can sometimes be processed in facilities that handle wheat.

Options for Substitutions

This overnight oats recipe is super forgiving and easy to customize based on what you have in your kitchen:

• Rolled oats: Stick with rolled oats for the best texture – quick oats will get too mushy, and steel-cut oats won’t soften properly overnight. Rolled oats are really the way to go here.
• Milk: Any milk works great in this recipe. Try almond milk, oat milk, soy milk, or coconut milk if you prefer dairy-free options. Just keep the same amount.
• Yogurt: Greek yogurt, regular yogurt, or even dairy-free yogurt all work well. If you’re using Greek yogurt, you might want to add a splash more milk since it’s thicker.
• Blueberries: Feel free to swap blueberries with other berries like strawberries, raspberries, or blackberries. You can also try diced peaches, mango, or banana for a different flavor.
• Maple syrup: Honey, agave nectar, or even a bit of brown sugar can replace maple syrup. Start with the same amount and adjust to your taste.
• Dark chocolate: Use milk chocolate, white chocolate, or chocolate chips if that’s what you have. You can also skip it entirely or replace it with nuts for some crunch.
• Coconut oil: If you don’t have coconut oil, regular butter or any neutral oil works fine for melting with the chocolate.

Watch Out for These Mistakes While Making

The biggest mistake people make with overnight oats is not using enough liquid, which leaves you with a thick, paste-like texture instead of creamy oats – if your mixture looks too thick after blending, add an extra splash of milk until it reaches a pourable consistency.

Another common error is skipping the resting time and trying to eat them right away, but overnight oats really need at least 90 minutes in the fridge for the oats to soften properly and develop that signature creamy texture.

When melting your dark chocolate with coconut oil, be careful not to overheat it or the chocolate will seize up and become grainy – use low heat or short microwave bursts and stir frequently until just melted.

For the best results, give your jars a quick stir before eating since the blueberries and chocolate tend to settle, and if you’re meal prepping, these will stay fresh in the fridge for up to 4 days.

What to Serve With Blueberry Overnight Oats?

Blueberry overnight oats are pretty filling on their own, but I love adding a handful of toasted almonds or walnuts on top for some extra crunch and protein to keep me full until lunch. A drizzle of extra maple syrup or honey is always welcome if you’re craving something a bit sweeter, and fresh berries like strawberries or raspberries make a nice addition alongside the blueberries. If you’re really hungry or need more fuel for your morning, pair your oats with a hard-boiled egg or some turkey sausage on the side for a balanced breakfast that’ll power you through your day.

Storage Instructions

Store: These overnight oats are perfect for meal prep and will stay fresh in the fridge for up to 5 days. Keep them in individual mason jars or airtight containers so you can just grab and go in the morning. The oats actually get better after a day or two as the flavors meld together!

Make Ahead: I love making a big batch on Sunday night for the whole week. Just portion them out into separate containers before adding the toppings, then add the fresh blueberries and chocolate right before eating. This way everything stays fresh and the chocolate doesn’t get soggy.

Serve: Enjoy your oats straight from the fridge for a refreshing breakfast, or let them sit at room temperature for 10 minutes if you prefer them less cold. Give them a good stir before eating since the ingredients can settle overnight.

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 1200-1350
• Protein: 28-34 g
• Fat: 38-46 g
• Carbohydrates: 200-220 g

Ingredients

For the oat base:

• 2 1/4 cups rolled oats (I always use Bob’s Red Mill for the best chew)
• 1/2 cup milk
• 1 cup frozen blueberries
• 1 1/4 cups yogurt (I prefer Fage 5% for a much creamier result)
• 2 tsp vanilla essence
• 2 tsp maple syrup
• 1/8 tsp salt
• 1/4 tsp ground cinnamon

For the fruit layer:

• 1 cup blueberries (freshly washed and patted dry)

For the chocolate topping:

• 2.8 oz dark chocolate (I use Lindt 70% cocoa bars for a rich snap)
• 1/2 tbsp coconut oil (melted with chocolate to prevent cracking)

Step 1: Prepare the Chocolate Topping

• 2.8 oz dark chocolate
• 1/2 tbsp coconut oil

Chop the dark chocolate into small, even pieces for faster melting.

Place the chocolate and coconut oil together in a microwave-safe bowl and heat in 20-second intervals, stirring between each interval, until completely melted and smooth.

Set aside to cool slightly—it should still be pourable but not piping hot.

I use Lindt 70% cocoa bars because they have a rich snap and don’t burn easily, but any quality dark chocolate works here.

Step 2: Blend the Oat Base

• 2 1/4 cups rolled oats
• 1/2 cup milk
• 1 cup frozen blueberries
• 1 1/4 cups yogurt
• 2 tsp vanilla essence
• 2 tsp maple syrup
• 1/8 tsp salt
• 1/4 tsp ground cinnamon

Add the rolled oats, milk, frozen blueberries, yogurt, vanilla essence, maple syrup, salt, and ground cinnamon to a blender in that order.

Blend on high speed until the mixture is completely smooth and creamy, about 60-90 seconds.

The frozen blueberries will break down and give the mixture a beautiful purple hue and subtle berry flavor throughout.

For a creamier result, I always use Fage 5% yogurt—it has a much richer texture than regular yogurt.

Step 3: Layer and Assemble the Jars

• 1 cup blueberries
• blended oat mixture from Step 2

Divide the fresh blueberries evenly among 4 mason jars or similar containers (about 1/4 cup per jar).

Pour the blended oat mixture from Step 2 over the fresh blueberries, filling each jar about three-quarters full.

Give each jar a gentle stir to distribute the berries and combine the layers slightly.

Step 4: Top with Chocolate and Chill

• melted chocolate mixture from Step 1

Drizzle the cooled melted chocolate from Step 1 evenly over the top of each jar, creating a thin chocolate layer.

You can use a spoon or squeeze bottle for even distribution.

Cover the jars with lids and refrigerate for at least 1.5 hours, though overnight (8-12 hours) is ideal as it allows the oats to fully hydrate and the flavors to meld together beautifully.

Step 5: Serve

Remove the jars from the refrigerator and serve cold.

The oats should be creamy and spoonable with a thick, pudding-like consistency.

You can eat straight from the jar or transfer to a bowl.

If the mixture has thickened too much, stir in a splash of milk to reach your preferred consistency.

Chocolate Blueberry Overnight Oats

Delicious Chocolate Blueberry Overnight Oats recipe with step-by-step instructions.

Print Recipe Pin Recipe

Prep Time 5 minutes mins

Cook Time 5 minutes mins

Total Time 12 minutes mins

Servings 4 servings

Calories 1275 kcal

Ingredients

  

For the oat base::

• 2 1/4 cups rolled oats (I always use Bob's Red Mill for the best chew)
• 1/2 cup milk
• 1 cup frozen blueberries
• 1 1/4 cups yogurt (I prefer Fage 5% for a much creamier result)
• 2 tsp vanilla essence
• 2 tsp maple syrup
• 1/8 tsp salt
• 1/4 tsp ground cinnamon

For the fruit layer::

• 1 cup blueberries (freshly washed and patted dry)

For the chocolate topping::

• 2.8 oz dark chocolate (I use Lindt 70% cocoa bars for a rich snap)
• 1/2 tbsp coconut oil (melted with chocolate to prevent cracking)

Instructions

 

• Chop the dark chocolate into small, even pieces for faster melting. Place the chocolate and coconut oil together in a microwave-safe bowl and heat in 20-second intervals, stirring between each interval, until completely melted and smooth. Set aside to cool slightly—it should still be pourable but not piping hot. I use Lindt 70% cocoa bars because they have a rich snap and don't burn easily, but any quality dark chocolate works here.
• Add the rolled oats, milk, frozen blueberries, yogurt, vanilla essence, maple syrup, salt, and ground cinnamon to a blender in that order. Blend on high speed until the mixture is completely smooth and creamy, about 60-90 seconds. The frozen blueberries will break down and give the mixture a beautiful purple hue and subtle berry flavor throughout. For a creamier result, I always use Fage 5% yogurt—it has a much richer texture than regular yogurt.
• Divide the fresh blueberries evenly among 4 mason jars or similar containers (about 1/4 cup per jar). Pour the blended oat mixture from Step 2 over the fresh blueberries, filling each jar about three-quarters full. Give each jar a gentle stir to distribute the berries and combine the layers slightly.
• Drizzle the cooled melted chocolate from Step 1 evenly over the top of each jar, creating a thin chocolate layer. You can use a spoon or squeeze bottle for even distribution. Cover the jars with lids and refrigerate for at least 1.5 hours, though overnight (8-12 hours) is ideal as it allows the oats to fully hydrate and the flavors to meld together beautifully.
• Remove the jars from the refrigerator and serve cold. The oats should be creamy and spoonable with a thick, pudding-like consistency. You can eat straight from the jar or transfer to a bowl. If the mixture has thickened too much, stir in a splash of milk to reach your preferred consistency.