Chocolate Overnight Oats (Extra Fiber!)

chocolate overnight oats in a glass jar with raspberries and mini chocolate chips.

Chocolate Overnight Oats (Extra Fiber!)

Course: Breakfast

Cuisine: vegan

Keyword: chocolate overnight oats

Prep Time: 5

Cook Time: 0

Total Time: 5

Servings:

Calories: 339kcal

Author: Megan Gilmore

Chocolate Overnight Oats are the perfect meal-prep breakfast when you want something easy to grab straight from the fridge. There's no reheating required, and it tastes like a rich chocolate treat! Since uncooked oats have more resistant starch than cooked oats (see the research below), your gut and taste buds will thank you.

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US Customary - Metric

Ingredients

1 cup old-fashioned rolled oats (certified gluten-free if needed)
2 tablespoon cacao powder
2 tablespoons ground flax seeds (or chia seeds)
3 to 4 tablespoons maple syrup
½ teaspoon vanilla extract (optional)
1 cup milk of choice (or more; see notes)

Instructions

You'll need two 12-ounce or larger glass jars with lids to get started. (Make more jars if you'd like more servings for the week ahead.) In each jar, add ½ cup of rolled oats, 1 tablespoon of cacao powder, 1 tablespoon of ground flaxseed, 1 ½ tablespoons of maple syrup, ¼ teaspoon of vanilla extract, and ½ cup of milk.
Stir well, until the cacao powder looks relatively well mixed in. (It can clump as you stir, and that's okay!) As written, this will make thick overnight oats. If you prefer a runnier consistency, like the photos in this post, add another ¼ cup of milk to each jar and stir again. You can also taste the mixture and add a little more maple syrup if a sweeter flavor is desired.
Cover with a lid, then store in the fridge overnight (roughly 8 to 12 hours).
When you're ready to eat, grab the jar from the fridge and remove the lid. Stir well and enjoy it right away. You can add an extra splash of milk for a looser texture, or add your favorite toppings, such as fresh raspberries or a drizzle of peanut butter. These jars can be stored in the fridge for up to 5 days.

Video

Notes

Nutrition information is for half the recipe (one jar) and is automatically calculated using an online ingredient database, so it's just an estimate, not a guarantee.

Milk Note: Research suggests that soaking oats in water, rather than cow's milk, may help to reduce phytic acid, and therefore might help nutrients be better absorbed. Since homemade almond milk is mostly water-based, I like to use it for overnight oats.

Want more protein? I often add a scoop of unflavored collagen peptides to overnight oats. This doesn't affect the flavor, but adds up to 18 grams of protein per scoop.

My Glass Jars: These are the glass jars (affiliate link) I use in all of my photos. We use them so often that we've collected about 10-12 of them over the years.

Update Note: This recipe was slightly updated in 2026. I doubled the recipe so it makes two jars instead of one, and I added flax seeds to the recipe rather than making them an optional add-in. Instead of flax seeds, you can use a tablespoon of chia seeds, hemp hearts, or peanut butter, too.

Nutrition