Raspberry Chia Overnight Oats (15g Fiber)

This is the recipe I recommend to anyone who says eating more fiber sounds like work. It takes five minutes the night before, requires zero cooking, and hands you 15 grams of fiber — more than half a day’s worth — before you’ve even had coffee. Raspberry chia overnight oats is fibermaxxing on autopilot.

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Why this combo wins

Three ingredients do the heavy lifting: rolled oats (4g fiber, plus cholesterol-lowering beta-glucan), chia seeds (a staggering 10g fiber in two tablespoons, and they thicken the whole thing into pudding), and raspberries (the highest-fiber common fruit at 8g a cup). Stack them and you clear 15 grams without trying — and because the chia and oats soak up the milk overnight, you wake up to a creamy, spoonable jar with no effort at all.

The one trick: stir twice

The only way to mess up overnight oats is to stir once and walk away. Chia seeds sink and set in a clump at the bottom. Stir when you combine everything, wait two minutes, then stir again — that second stir suspends the chia evenly and you get a uniform, creamy texture instead of a gluey layer.

Make it your own

• Chocolate PB: add a spoon of cocoa and swap almond butter for peanut butter.
• Apple cinnamon: stir in cinnamon and top with diced apple (skin on for more fiber).
• Tropical: use coconut milk and top with mango and toasted coconut.
• Extra protein: stir in a scoop of protein powder or a spoon of Greek yogurt.

Frequently asked questions

Can I eat it warm?

Yes — microwave it for a minute if you prefer warm oats. The texture stays creamy. Most people find they like it cold once they get used to it, but there’s no wrong way.

Do I have to use chia?

You can skip it, but chia is doing two jobs: adding 10g of fiber and thickening the oats into that pudding texture. Without it you’ll want to reduce the milk slightly. Ground flax is a decent substitute for the fiber, though it won’t thicken as much.

How long do they keep?

Four days in the fridge, which is what makes them such a good meal prep. If using fresh (not frozen) berries, add them the morning of for the best texture.

Is 15g of fiber at breakfast too much?

For most people it’s a great start to the day, but if your usual intake is low, ease in with a smaller portion and drink plenty of water — our fibermaxxing guide explains how to ramp up comfortably.

The recipe

Emma Hartwell

Raspberry Chia Overnight Oats (15g Fiber)

The five-minute, no-cook breakfast that hands you 15 grams of fiber before you are even properly awake. Stir it tonight, grab it tomorrow. This is the recipe that makes fibermaxxing effortless.

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Prep Time 5 minutes mins

Total Time 5 minutes mins

Servings: 1 jar

Course: Breakfast

Cuisine: American

Calories: 390

Ingredients Method Notes

Ingredients

  

• 1/2 cup rolled oats
• 1 tbsp chia seeds
• 3/4 cup milk of choice dairy or plant
• 1/2 cup raspberries fresh or frozen
• 1 tsp maple syrup optional
• 1 tbsp almond butter to top

Method

 

1. Add the oats, chia seeds, milk and maple syrup to a jar or bowl. Stir well, then wait 2 minutes and stir again — this second stir stops the chia from clumping.
   
2. Fold in half the raspberries, lightly mashing them into the oats so they turn everything pink and jammy.
3. Cover and refrigerate overnight, or at least 4 hours.
4. In the morning, top with the remaining raspberries and a drizzle of almond butter. Eat cold, straight from the jar.

Notes

Fiber: ~15g from oats + chia + raspberries — the single highest-fiber breakfast on the site.

Meal prep: make 4 jars at once; they keep 4 days refrigerated.

Swaps: any berry works; blueberries and blackberries are nearly as high in fiber.

This is #1 in our 15 high-fiber breakfast ideas, and the four-flavor version lives in chia pudding 4 ways. Building a full day? The 7-day meal plan starts right here.

Prefer it hot? High-fiber oatmeal uses the same seed-and-berry idea in a cooked bowl with 17.1 grams of fiber.

Emma Hartwell

Emma Hartwell is the home cook and recipe developer behind Fiber & Fork. After years of dealing with sluggish digestion and endless afternoon energy crashes, she rebuilt her kitchen around one simple idea: hit 30 grams of fiber a day without eating a single boring meal. Every recipe on this site is cooked, photographed, and taste-tested in her own kitchen — beans, lentils, whole grains, and vegetables turned into food you'll actually crave. When she's not stirring a pot of something cozy, Emma is testing new ways to sneak fiber into desserts her family can't tell apart from the 'real thing'.