Can I use frozen berries in overnight oats?

Yes. Add them straight from the freezer. They thaw overnight and their juice sweetens and colours the oats.

Do I need to add sweetener to mixed berry overnight oats?

Usually not. The berries release natural syrup overnight. If your berries are very tart, a drizzle of honey helps.

How long do berry overnight oats last in the fridge?

A day or two, covered. The berries soften further over time, which some people like more.

Overnight OatsContinental

Mixed Berry

Triple the berries, triple the antioxidants. The combination of strawberries, blueberries, and raspberries creates complex flavors while delivering serious nutrition. Perfect for brain health, inflammation reduction, or when you want something that tastes amazing and is incredibly good for you.

Time: 365 min
Method: Layer
Serves: 1
Energy: 415 kcal
Protein: 15 g

Go to the method

Bowl of mixed berry overnight oats topped with strawberries, blueberries and raspberries

Method

Step 1: Layer all three berry types over your DIY Oats base.
Step 2: Mix them or keep them in distinct sections - your choice.
Step 3: The berries will release their juices overnight, creating a naturally sweet syrup that flavors everything.
Step 4: This is one of the most nutrient-dense recipes we have.
Step 5: Use frozen berries if fresh aren't available.

Notes from the Department

Triple berry

Nutrition

1 serving

415 cal | 15g protein | 13g fiber

2 servings

830 cal | 30g protein | 26g fiber

Estimates. Not medical advice.

Why it works

Three berries, three jobs. Strawberries bring sweetness, blueberries bring a mellow, jammy note, and raspberries bring tartness. Layered over the soaked oats, they release their juices overnight and make a natural syrup that runs down into the jar. No added sugar needed. Of all the recipes in the range, this is one of the lightest, at around 415 calories per serving.

Mixed or in sections

Stir them through and you get a pink, evenly fruity jar. Keep them in three sections on top and you can choose your bite, which is more fun than it sounds. Both are allowed.

Frozen berries are fine

Frozen mixed berries are often cheaper and easier to find than fresh raspberries. Add them straight from the freezer. They thaw overnight and release even more juice than fresh, so the oats end up more deeply coloured and sweeter.

If you are using a homemade base

Soak rolled oats overnight in milk with a spoon of chia and a few almonds, then layer the berries on top.

Serving ideas

A spoon of Greek yogurt or a drizzle of honey on top in the morning. A few almond flakes for crunch. Per serving: around 415 calories, 15g protein and 13g fibre.

Questions people ask

Can I use frozen berries in overnight oats?: Yes. Add them straight from the freezer. They thaw overnight and their juice sweetens and colours the oats.
Do I need to add sweetener to mixed berry overnight oats?: Usually not. The berries release natural syrup overnight. If your berries are very tart, a drizzle of honey helps.
How long do berry overnight oats last in the fridge?: A day or two, covered. The berries soften further over time, which some people like more.