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The Best No-Sugar Added Mixed Berry Overnight Oats | THM-E

Looking for an easy and healthy breakfast idea? This tasty recipe for Mixed Berry Overnight Oats is naturally gluten free, has no added sugar, and is perfect for meal prepping!

If you’ve been around Simply2Moms for a while, you probably already know I love overnight oats.

It’s basically the perfect breakfast!

You can easily make it ahead.

It’s got lots of nutritious ingredients and keeps me feeling full all morning.

So I have fun experimenting with different flavor combinations.

Like this Blueberry Lemon Cheesecake one.

Or this Raspberry White Chocolate one.

And this Caramel Apple version.

They’re so good it’s like eating dessert for breakfast (or as a snack)!

The best part is, none of my overnight oats recipes have any added sugar.

Overnight oats topped with cut strawberries and blueberries.

Recently, I’ve been playing around with the fresh flavors of summer.

AnnMarie loves this Strawberry Banana version and my daughters and I have been enjoying these Peach Cobbler Overnight Oats.

And today, I’ve got a tasty mixed berry overnight oats recipe for you!

Dare I say, it’s very berry overnight oats?

You be the judge!

Are Overnight Oats Good For You?

Glass jar with overnight oats topped with strawberries, blueberries, and keto granola.

Did you know that soaked oats are easier for your body to digest?

Soaking the oats overnight breaks down the starches in the oats and it also reduces the natural phytic acid levels.

Why does this matter?

Since they’re easier to digest, your body actually will use the nutrients more efficiently!

Cold soaked oats also contain increased resistant starch, a healthy carb that’s been shown to aid in weight loss and helps you feel fuller longer.

I’m sitting here wondering why I’m not eating them for every meal! LOL

Resistant starch actually helps reduce spikes in insulin levels, so overnight oats are often a great choice for people with diabetes. Of course, I’m not a doctor or nutritionist! These are just things I’ve learned while reading up on the benefits of soaked oats. Always follow the guidelines recommended by your doctor if you have diabetes!

For the best results, oats need to soak for at least 8 hours, so whip up a batch before bed and they’ll be perfect by morning.

One thing: the texture of overnight oats is different from cooked oats. It took me a few times of trying them to really like them. In fact, I actually warmed them before eating them the first few times.

Then I let them sit on my counter and get to room temperature a few times.

And now, I actually prefer my soaked oats recipes over cooked oatmeal!

What You Need to Make Mixed Berry Overnight Oats

Ingredients to make mixed berry overnight oats on a counter.

Rolled Oats: A great source of healthy carbs and fiber plus some high-quality protein for good measure. They’re also high in antioxidants. Basically, they’re a super food! Use the old-fashioned kind, not the instant or quick cook variety.

Unsweetened Almond Milk: It’s low in sugar and carbohydrates, especially compared to cow’s milk, and is low on the glycemic index so it won’t spike your blood sugar.

Plain Nonfat Greek Yogurt: My favorite kind is Fage because it’s the thickest and richest yogurt I’ve ever tried! Packed with protein, it will help you to feel full longer.

Swerve Confectioners (or another powdered low carb sweetener): Plain yogurt is a little tangy by itself, so add some sweetener so it doesn’t taste like sour cream… I prefer using powdered sweetener so it dissolves better without any grittiness.

Vanilla Extract: Did you know you can make your own vanilla extract with vanilla beans? Did you know it’s rich in vanillin and even has some antioxidant benefits? Plus it tastes amazing!

Fresh Mixed Berries: Berries are all considered superfoods. They’re filled with antioxidants, plus they have potassium, manganese, and even omega-3 fatty acids. They can actually help your body regulate its blood sugar. Plus they taste amazing! Did you know that berries last longer if you store them in mason jars?

Fun Ways to Serve Overnight Oats

Bags of NuTrail keto granola and Ratio keto granola.

I love topping overnight oats with some granola!

The crunch adds a little extra something to kick it up a notch.

Unfortunately, most store bought granolas are loaded with added sugar.

However, NuTrail makes a variety of options that are keto-friendly with no added sugar. This blueberry version is delicious. It has a fair amount of fat in it, so I limit myself to just a tablespoon of it when I’m topping overnight oats.

Another delicious granola without any added sugar that has less fat, is this one from :ratio.

Glass jars with bamboo lids filled with mixed berry overnight oats with ramekins of toppings and jars of cinnamon and nutmeg.

If you’re hosting a breakfast with friends, or if you want to treat your family, try creating an Overnight Oats Topping Bar.

I like to set out containers of different granolas, Swerve Brown sweetener, and shakers of cinnamon and nutmeg.

You can put out more berries too.

Then each person can customize their container of overnight oats.

The Easiest Way to Make Overnight Oats

Glass bowl filled with mixture of rolled oats, plain Greek yogurt, almond milk, and flavorings.

I always make a large batch of overnight oats because it’s so nice to have breakfast already made and ready to go in the mornings.

The easiest way to make overnight oats when you’re making this recipe is to mix the oats, yogurt, unsweetened almond milk, sweetener, and extracts in a large bowl. Simply stir until there are no more lumps from the yogurt.

Blueberries and cut up strawberries in the bottom of a glass container with attached bamboo spoon.

Next, layer the jars.

I like having some fruit in every spoonful, so I always divide the fruit in half, and sometimes in thirds, and then layer the fruit and the oats mixture in my airtight containers.

That way, the last bite is just as delicious as the first one!

Overnight oats mixture poured over mixed berries in a glass jar.

Be mindful to stir the oats mixture before you add it to the jars because the oats tend to settle to the bottom of the bowl.

Otherwise, you may find that some of your jars end up having more liquid than others.

If you notice that a jar looks like it’s got more liquid, you can always add another tablespoon of oats and then just push them down into the liquid.

Glass jar with attached bamboo spoon filled with overnight oats topped with mixed berries.

Berries are so good for you, that I like to fill up the top portion of the jars with as many as will fit!

How to Store Overnight Oats

Glass jar with a bamboo lid and attached spoon filled with mixed berry overnight oats.

Overnight oats need to soak for at least 8 hours before eating to get the full benefits of soaked oats.

The easiest way to store them is with a container that has a lid.

I’m loving these glass jars with a bamboo lid and a spoon attached!

But if you need a container that has a better seal, these jars have screw top lids but they still have a spoon attached to the side.

Or you can always use a 12 oz or 16 oz mason jar.

Glass overnight oats jars with wood lids and spoons in a refrigerator.

Be sure to store the containers in the refrigerator.

They hold up well for 5-7 days as long as the berries were fresh when you started.

Resources and Shopping Links

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Collage of products used to make and store overnight oats.

Sources: 10 oz Mason Jars | Spatula Set | Citrus Juicer Hand Press | Stainless Steel Measuring Cups and Spoons | Angled Liquid Measuring Cup Set | Glass Jars with Bamboo Lids and Attached Spoons | Overnight Oats Jars with Screw Tops and Attached Spoon | 4-quart Glass Mixing Bowl with Handle

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Glass jar with overnight oats topped with strawberries, blueberries, and keto granola.

Mixed Berry Overnight Oats | THM-E

Yield: 4
Prep Time: 5 minutes
Additional Time: 8 hours
Total Time: 8 hours 5 minutes

Looking for an easy and healthy breakfast idea? This tasty recipe for Mixed Berry Overnight Oats is naturally gluten free, has no added sugar, and is perfect for meal prepping!


  1. Rinse strawberries and blueberries and lay them out to dry on paper towels.
  2. Remove the tops of the strawberries and cut into bite-sized pieces.
  3. Divide the berries in half and set one half aside.
  4. Evenly divide one half of the berries between four 12-16 oz containers with lids.
  5. In a large mixing bowl, combine the rolled oats, almond milk, yogurt, extracts, and sweetener. Mix until well combined.
  6. Scoop the oat mixture on top of the layers of mixed berries, approximately 3/4 cup per container.
  7. Divide the remaining half of the berries evenly between each container on top of the oat mixture.
  8. Cover the jars and refrigerate overnight. Serve cold, or at room temperature.
  9. These jars of oatmeal can be stored for up to a week in the refrigerator.

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Nutrition Information
Yield 4 Serving Size 1
Amount Per Serving Calories 314Total Fat 5gTrans Fat 0gUnsaturated Fat 2.3gCholesterol 5mgSodium 256mgCarbohydrates 41gNet Carbohydrates 34gFiber 7gSugar 11gProtein 15g

Please note that we are not medical or nutritional professionals. We include nutrition information for our recipes as a courtesy to our readers. However, due to wide variations in brands, nutrition data is subject to change for every user. Nutrition data is calculated using My Fitness Pal Pro. All sugar alcohols are subtracted from the final carb count. Please refer to our complete Nutritional Disclosure for more details.

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