Overnight Steel-Cut Oats
These overnight steel-cut oats are the ultimate make-ahead breakfast. Make a batch for the whole family, or store the extra servings in the fridge to eat throughout the week. We love these creamy steel-cut oats topped with honey, bananas and raspberries, but any sweetener, chopped fruit or nut topping will work well.
I’m not usually one to play matchmaker, but I was so firmly convinced that two of my longest-running, most-treasured breakfast besties—overnight oats and steel cut oatmeal—would hit it off that I couldn’t resist the urge to combine the two into a single bowl of Overnight Steel Cut Oats. Ladies and gentlemen, we have a match made for a 1990s rom-com classic! Ever since I stirred together my first batch of make-ahead steel cut oats, it’s been a ride-off-into-the-sunset breakfast love story.
Now, if you are reading this and thinking to yourself, Isn’t the fact that you can use steel cut oats for overnight oats incredibly obvious?, please consider the great fictional romances of our time.

Wasn’t it also obvious that Harry would end up with Sally? That Tom Hanks and Meg Ryan were meant to be (twice)? That Ross would finally win over Rachel? Why, yes. But that doesn’t make the evolution of the love story any less satisfying.

The same is true of Overnight Steel Cut Oats.
If you are reading up to this point and wondering, What are overnight oats?, let me give you a brief rundown: overnight oats are dry oats that are stirred together with milk, a bit of sweetener such as honey or maple syrup, and whatever other deliciousness you like.

You can make overnight oats with chia seeds, peanut butter, fresh or dried fruit, and any other mix-ins. The limit is only your imagination (or perhaps your pantry). This Sugar Cookie Protein Oatmeal, for example, includes a scoop of protein powder.

You leave the oatmeal in the refrigerator overnight and then wake in the morning to a bit of breakfast magic.
In the refrigerator, the oatmeal absorbs a portion of the milk and becomes irresistibly creamy. You give it a stir, pour it into a bowl, and sit down to reap the benefits of a filling, healthy, delicious breakfast that took seconds to prepare.

Overnight oats are typically enjoyed cold, similar to muesli. If you prefer a hot oatmeal that can be made overnight, you can check out my Overnight Slow Cooker Steel Cut Oats. If you need a hot oatmeal that can be made in minutes, check out my Instant Pot Steel Cut Oats and original Steel Cut Oats recipe.

So, What’s the Difference between Overnight Steel Cut Oatmeal and Every Other Overnight Oats Recipe?
Up until the point of making this recipe, I’d always made my overnight oatmeal with rolled oats (a.k.a. old-fashioned oats). Rolled oats are whole oats that have been steamed and pressed, so they cook more quickly and have a more pliable texture. Overnight oats made with rolled oats are more creamy than chewy. They are also delicious. Start with my Apple Cinnamon Overnight Oats and see if you agree.

Steel cut oats are closer to their original harvested state. They are not steamed but instead are cut into pieces with a steel blade (hence the name “steel cut”). Steel cut oats are chewier and nuttier.

The firmer texture of steel cut oats means they take longer to cook, but your reward is a bowl of oatmeal that has the most perfectly pleasing texture and is never ever mushy. Steel cut oats are also higher in fiber than regular rolled oats, and I find that they keep me fuller for longer.

Generally, you never want to substitute steel cut oats for rolled oats in a recipe, because the two have such different textures…
…unless, of course, you want to try making overnight oatmeal using steel cut oats, which is exactly what I did for us here!

(If you’d like to know more about the difference between different types of oats, this guide briefly explains).