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Blackberry Overnight Oats

I’m still obsessed with overnight oats and have been making a new flavor each week to keep things interesting. I had a ton of frozen blackberries in my freezer from another baking project, so I figured it was time to make blackberry overnight oats!

This recipe uses loads of blackberries, which give it a beautiful color and pack these oats with flavor. They’re so delicious that they almost taste like you’re eating dessert for breakfast.

image of blackberry overnight oats made in advance in cute mason jars

The best part is that these blackberry overnight oats are gluten-free, can easily be made vegan, and are packed with protein. They truly are such an easy and wonderful way to start your day.

Getting the Ratios Just Right in Blackberries Overnight Oats

Oatmeal can be a divisive topic. Most people prefer their oatmeal one of two ways.

Either thick like paste, or thinner and a bit wetter. I’m going to be honest with you, I like my oatmeal a bit “wetter.”

However, that’s not how this recipe is formulated. I created this recipe to make a thicker oatmeal once it comes out of the fridge. This way, everyone is happy in the end!

People who like a thicker oatmeal can eat it straight out of the fridge, and anyone who wants it a bit thinner can add a splash of milk or water.

image of blackberry oats being made with skim milk and chia seeds

The proper ratio of liquid to oats varies based on a lot of factors. For instance, I love adding chia seeds to my oats because they’re a great source of fiber, omega-3s, and protein. But they absorb a ton of water!

Usually, I stick to a 1:1 ratio of oats to water or milk, and I use 1/2 cup of water in this recipe.

How Far in Advance Do You Need to Make Overnight Oats?

Despite their name, overnight oats don’t actually have to sit in the fridge overnight.

However, they do need a bit of time to soak up the water or milk and soften. If I forget to make my overnight oats ahead of time, I find they only need about 3 hours to soak before they’re ready to go.

They’re definitely a bit thinner when they soak for less time, though.

Letting them sit overnight not only helps them fully soften, but it also gives the flavors a chance to develop.

Long story short, an overnight soak is ideal but not necessary if you are short on time.

Can Overnight Oats Be Eaten Warm?

Not everyone can get behind the idea of eating uncooked, cold oats. And I get it, if you haven’t tried overnight oats before, it does seem like an odd concept.

But trust me on this one, cold overnight oats are absolutely delicious and have an amazing texture. They’re also an incredibly refreshing breakfast on a warm day.

With that being said, you can eat overnight oats warm. They can be heated just like any other bowl of oatmeal. Pop them into the microwave and heat in 30-second intervals until they’re warm.

image of blackberry overnight oats made in advance in cute mason jars

Can Overnight Oats Be Made With Frozen Berries?

The short answer? Heck yeah! In fact, I actually prefer making overnight oats with frozen berries unless whatever fruit I’m using is in peak season.

Frozen berries are picked at their ripest and instantly frozen to trap in all that delicious flavor. They also tend to naturally color overnight oats as they thaw and are stirred in.

This gives your overnight oats a fantastic flavor and a gorgeous look. In my mind it’s a win-win situation.

image of fresh blackberries in a bowl

Customizing These Overnight Oats

One of the best things about these blackberry overnight oats is that they are totally customizable to your dietary preferences!

In addition to the substitutions discussed above, you can easily make these overnight oats vegan or gluten-free. Below are some specific swaps in this recipe:

Vegan substitutions: Use plant-based milk and plant-based yogurt.

Gluten-free substitution: While oats are naturally gluten-free, not all are processed in wheat-free facilities. Be sure to check your package. Be sure to use gluten-free oats.

Substitutions & Swaps

While I love this recipe for blackberry overnight oats just the way it is, I know some of you might not have all these ingredients on hand!

image of a lemon being zested into blackberry overnight oats

Below are some swaps and substitutions that can be made in this recipe:

  • Rolled Oats (GF) – This recipe turns out best with rolled or old-fashioned oats. You can use quick oats if that’s all you have, but you should reduce the amount of water or milk to 1/3 of a cup.
  • Chia Seeds – If you don’t have chia seeds, you can omit them from this recipe. They absorb a lot of liquid, though, so you will need to reduce the amount of water or milk to 1/3 cup to get the right consistency.
  • Brown Sugar – I prefer using light brown sugar in this recipe, but dark brown sugar or less refined sugar like coconut sugar would taste great too!
  • Greek Yogurt – Greek yogurt adds a wonderful creaminess to these oats, along with a lot of protein. However, you can use any yogurt you like or dairy-free yogurt! You can also skip adding yogurt if you’re not a fan.
  • Blackberries – Blackberries add wonderful flavor and color. You can use fresh or frozen berries! I love using frozen berries because they naturally color the oats and give them a beautiful look once mixed in.
  • Milk – I prefer making these oats with skim milk, but you can also use water or any dairy-free milk.
  • Lemon Zest – The lemon zest is optional, but it really brightens up the flavor of these overnight oats!

Tips for Making the Best Blackberry Overnight Oats

  • Make your oats in a sealable container like a mason jar!
  • Be sure to use a large enough jar to give yourself room to stir.
  • Feel free to double this recipe or make multiple jars to last the entire week.
  • These blackberry overnight oats stay good in the fridge for up to 4 days.
  • Use rolled or old-fashioned oats to give your oatmeal the best texture and consistency!
  • If you like your oatmeal a bit thinner, I suggest adding a splash of water or your favorite milk before eating.
  • Use frozen berries! They naturally color the oats and create a beautiful look once mixed in.
  • Top your oats with a dollop of whipped cream and fresh berries to take them to the next level.
image of blackberry overnight oats made in advance with fresh blackberries

Let Me Know What You Think!

If you try this recipe for blackberry overnight oats, I’d love to hear what you think! Leave a rating and comment below.

Tag me @chelsweets and use #chelsweets so that I can see your delicious creations on social media!

image of blackberry overnight oats made in advance in cute mason jars
Print Recipe
4.67 from 3 rating

Blackberry Overnight Oats

These blackberry overnight oats are the best breakfast! They're the perfect balance of tart and sweet, and are a wonderfully healthy way to to start the day.
Prep Time5 minutes
Additional Time3 hours
Total Time3 hours 5 minutes
Course: Granola & Oatmeal
Cuisine: American
Servings: 1
Calories: 487kcal

Ingredients

Blackberry Overnight Oats

  • 1/2 cup old fashioned or rolled oats 50g
  • 2 tsp chia seeds 6g
  • 2 Tbsp packed light brown sugar 20g
  • 1/4 cup plain Greek yogurt or dairy-free yogurt 70g
  • 1/2 cup fresh or frozen blackberry 70g
  • 1/2 cup milk of your choice or water 120g
  • 1 tsp lemon zest – optional 2g

Optional Toppings:

  • fresh berries
  • whipped cream

Instructions

  • Add 1/2 cup rolled oats, 2 tsp chia seeds, 2 Tbsp brown sugar, 1/4 cup greek yogurt, 1/2 cup blackberry, 1/2 cup milk and 1 tsp lemon zest (if desired) into a mason jar or bowl.
  • Stir to combine the ingredients, then refrigerate for at least 3 hours or overnight.
  • When you’re ready to eat the oats, remove from the fridge. You’ll see that the oats absorbed a lot of the liquid, so you might want to add a little more water or milk of your choice before eating.
  • If desired, top with additional fresh berries and/or a dollop of whipped cream and enjoy cold!
  • These blackberry overnight oats keep in the fridge for up to 4 days.

Video

Notes

How To Make the Best Blackberry Overnight Oats:

  • Make your oats in a sealable container like a mason jar!
  • Feel free to double this recipe or make multiple jars to last the entire week.
  • These blackberry overnight oats stay good in the fridge for up to 4 days.
  • If you like your oatmeal a bit thinner, I suggest adding a splash of water or your favorite milk before eating.
  • Top your overnight oats with a dollop of whipped cream and fresh berries to take them to the next level.

Nutrition

Serving: 1g | Calories: 487kcal | Carbohydrates: 73g | Protein: 30g | Fat: 11g | Saturated Fat: 4g | Polyunsaturated Fat: 5g | Cholesterol: 29mg | Sodium: 531mg | Fiber: 10g | Sugar: 52g

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4.67 from 3 votes (3 ratings without comment)
Recipe Rating




Rachel

Tuesday 27th of August 2024

Hi, this was the first time I've ever had, or made, overnight oats. I didn't have chia seeds, and also missed out the lemon zest and toppings. It was so yummy, I'm going to be making it again for breakfast tomorrow!

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