This raspberry overnight oats recipe is a high-protein breakfast made with rolled oats, chia seeds, milk, Greek yogurt, protein powder and raspberries. They're perfect for breakfast meal prep because you can make them ahead, store them in jars, and grab one straight from the fridge.
I eat overnight oats pretty much every day. They're ridiculously easy to make and there are so many opportunities for flavour combinations that you can never really get bored. I'm also a big sweet breakfast fan so it makes sense that this is my daily breakfast meal prep.
When raspberries are in season, this raspberry overnight oats is definitely my go-to, especially with some homemade raspberry chia jam, but when they aren't in season, I'll often use some frozen mixed berries in my overnight oats to keep things affordable.
TL;DR
- Servings: 2 servings (1 jar per serve)
- Prep time: 5 minutes
- Meal prep: You can make a whole bunch in a short period of time making them perfect for a week long meal prep.
- Fridge storage: 4-5 days (add splash of liquid if thickens too much).
- Reheating: Designed to be eaten cold. Can reheat in microwave for stove-top vibe.
- Customise: Use fresh or frozen raspberries, plain or flavoured Greek yogurt, different milks, flaxseed instead of chia seeds, or a spoonful of raspberry chia jam.
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Why you'll love this recipe
Versatile. You're not locked in to the raspberry overnight oats. Prepare your base and then add one with raspberries, another with lemon and blueberry, and another with choc chips.
Filling. Greek yogurt and protein powder add protein. Rolled oats and chia seeds add fibre. Together, they make this more satisfying than plain oats and milk.
Meal prep. Make a few jars at once and keep them in the fridge. Breakfast is ready when you are. For more options, see 15+ overnight oat recipes.
Ingredients
Rolled oats. Rolled oats are the best option because they soften overnight while still holding some texture, whereas instant oats can become mushy and steel-cut oats usually stay too firm without extra soaking.
Chia seeds. Chia seeds help thicken the oats and stop the mixture from becoming watery by morning, and I do not recommend skipping them unless you are replacing them with flaxseed.
Greek yogurt. Greek yogurt makes the oats thicker and creamier, and I'll switch between plain Greek yogurt and a raspberry or mixed berry yogurt depending on what I have.
Protein powder. Protein powder is optional, but it makes the breakfast more filling and can also thicken the mixture. Plain, vanilla or salted caramel protein powder all work, but adjust the milk depending on how much your protein powder absorbs.
If you plan to heat the oats in the morning, vegan protein powder usually handles heat better than whey, which can sometimes go a little grainy.
Raspberries. Fresh raspberries are great when they're in season, but frozen raspberries are often cheaper and soften well overnight. If using frozen raspberries, they may release more liquid, so stir the oats before eating.
Please check the recipe card for full list of ingredients and quantity. See below for substitutions and variations.
Substitutions and variations
Chia seeds for flaxseed. You can swap chia seeds for ground flaxseed if that is what you have, but the texture will be slightly different. Chia seeds give a more pudding-like thickness, while flaxseed gives a softer, nuttier finish.
Yogurt. Plain Greek yogurt, vanilla Greek yogurt, raspberry yogurt or mixed berry yogurt all work. If you use a thinner non-Greek yogurt, add extra chia seeds or reduce the milk slightly otherwise the overnight oats will be too runny (well, for my preference anyway)
Milk for different types of milk. Dairy milk, soy milk and barista-style oat milk give the creamiest result, while almond milk or water will make the oats lighter and less creamy. If using a thinner milk, reduce the liquid slightly or add extra chia seeds.
How to make raspberry overnight oats
Step 1: Add oats, chia seeds, protein powder and yogurt to a container (or individual jars).
Step 2: Cover with milk and mix (or shake) until combined.
Note - you can add the raspberries now, but if using fresh they can go a bit soggy in the liquid. I prefer adding fresh fruit the morning I'm going to eat.
Step 3: Let sit in the fridge for 4 hours or overnight. You'll notice that it thickens up over this time.
Step 4: Top with fresh raspberries before eating.
Lauren's Top Tips
Mix the protein powder properly. Protein powder can clump if it is not fully mixed with the milk and yogurt, so stir until there are no dry pockets before refrigerating.
Adjust the liquid after chilling. Overnight oats thicken as they sit, so judge the final texture in the morning rather than adding too much milk at the start.
Recommended Equipment
Overnight oat jars with airtight lids are the easiest option because you can add everything straight to the jar, shake it vigorously, store it, and eat from the same container. That means no mixing bowl, no transferring, and one less dish to wash, which is my kind of kitchen maths.
Meal prepping raspberry overnight oats
These raspberry overnight oats are an easy breakfast meal prep option because the recipe is designed to sit in the fridge. You can prep a few jars at the start of the week and change the toppings so it does not feel like the same breakfast every day. Add raspberry chia jam one day, extra Greek yogurt the next, or even some homemade honey granola.
Storing
Store raspberry overnight oats in an airtight jar or container in the fridge for 4-5 days. The oats will continue to thicken as they sit, especially if you use chia seeds and protein powder.
If you're prepping multiple serves, check the texture before eating. Add a splash of milk and stir if the oats have thickened too much. This is especially helpful from day 3 onwards, when the oats can become denser.
Lauren's Meal Prep Tip
Prep the base without delicate toppings, then add fresh raspberries, extra yogurt or raspberry chia jam on the day you eat it. This keeps the texture fresher and stops the top layer from getting watery.
Reheating
Overnight oats are designed to be eaten cold, but you can heat them if you prefer a warmer oatmeal-style breakfast. Add a splash of milk, stir, then microwave in 1 minute intervals until warmed through.
The texture will not be exactly the same as stovetop oatmeal, but it gets close because the thickening has already happened overnight. Instead of stirring oats over heat until they soften, you are mostly reheating an already-thickened oat mixture.
If reheating with protein powder, vegan protein powder is usually the safest option because it handles heat better. Whey or casein can be fine cold, but they may become grainy when heated.
If you want more meal prep information, check out my Meal Prep for Beginners post and my Meal Prep Basics E-Book.
FAQs
Overnight oats become too thick when the rolled oats, chia seeds and protein powder absorb more liquid than expected. Add a splash of milk in the morning and stir until the texture loosens.
Chia seeds are not compulsory, but they help thicken the oats and improve the texture. If you skip them, the oats may be thinner unless you reduce the milk or use more Greek yogurt.
Other breakfast meal prep recipes you'll like
Or, you can have a browse through my easy make ahead breakfasts for more delicious eats.
Recipe
Raspberry Overnight Oats
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Equipment
- Overnight Oats Jars
Ingredients
- 1 cup rolled oats, see note 1
- 2 tablespoon chia seeds, see note 2
- ¼ cup Greek yogurt, see note 3
- 2 cups milk, see note 4
- ¼ cup protein powder, 2 scoops, vanilla or berry
- ½ cup raspberries, fresh or frozen
Instructions
- Add 1 cup rolled oats, 2 tbsp chia seeds, ¼ cup Greek yogurt and ¼ cup protein powder to a container or individual jars.
- Pour over 2 cups milk, then mix well until everything is combined. If using jars, seal with the lid and shake until there are no dry patches of oats or protein powder.
- If using frozen raspberries, you can mix ½ cup raspberries through now so they soften overnight. If using fresh raspberries, add them just before eating so they don't go soggy in the liquid.
- Seal the container or jars and refrigerate for at least 4 hours, or overnight. The oats will thicken as they sit.
- Before eating, stir well and add a splash of extra milk if the oats are thicker than you like. Top with raspberries and serve.
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