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Slow Cooker Overnight Apple Cinnamon Oats

4.15 from 7 votes
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Throw the ingredients in your slow cooker before bed and you’ll have warm overnight apple cinnamon oats ready when you wake up!

apple cinnamon oats in white bowl with spoon

These slow cooker overnight apple cinnamon oats pack all the flavors of Fall into a warm, cozy bowl. They’re loaded with all the Fall flavors that you’re accustomed to such as cinnamon, apples, and pecans. I love how easy this comes together as well. It’s nearly hands-off and you wake up in the morning to the most amazing smell in your house. It’s like having a house full of Bath and Body Works candles.

I remember when I first wrote this recipe, overnight oats were just becoming a thing and it’s interesting years later, they are still ever-so popular.

There are so many unique “flavors” out there now and even I’ve got some:

maple syrup being poured on apple cinnamon oats in a white bowl

Why slow cooker overnight apple cinnamon oats?

Well, in general, overnight oats are one of my favorite things to make because it’s so hands off.

The best way to utilize this is when you’re having overnight guests.

Everyone wakes up at different times and instead of being concerned about, “what’s for breakfast?” if you have a batch of slow cooker overnight apple cinnamon oats ready when everyone wakes up, they can serve themselves a bowl with their coffee.

It helps the entire household out and you won’t have any hangry guests or anyone rummaging through your pantry for something to tame that hunger!

apple cinnamon oats with cubed apples and pecans in a white bowl and spoon

What You’ll Need:

  • Apple – fresh apples! I would go for Fuji, Gala, Honeycrisp, or whatever variety you like. I would stay away from Red Delicious (I think the exterior is too waxy) and Granny Smiths.
  • Milk – cow’s milk or dairy-free works!
  • Apple Cider – please, NOT apple cider vinegar. Apple cider!! If you can’t find apple cider, you can substitute for apple juice.
  • Steel cut oats – I love the texture of steel cut oats and it’s the perfect candidate for an overnight slow cooker oats recipe such as this because it doesn’t get super mushy and steel cut oats typically take longer to cook anyway.
  • Brown sugar – dark brown sugar to be exact. I love the depth of flavor the dark brown sugar gives.
  • Ground cinnamon
  • Ground flaxseed – for that extra fiber, ya know?
  • All the toppings – nuts, maple syrup, more apples, and do you dare add some whipped cream?!

Can I use another fruit?

You could but this is for apple cinnamon oats so maybe another hard fruit that compliments apples well?

How to make overnight apple cinnamon oats:

Spray the insert of your slow cooker. You definitely don’t want to miss this step otherwise you’ll be scrubbing the insert for a bit! You can also use a slow cooker liner if you prefer.

Add the ingredients. Add all the ingredients (apples, milk, apple cider, water, oats, brown sugar, ground cinnamon, ground flaxseed) to the insert of the slow cooker.

Stir, cover, and cook on low for 3-4 hours. You can cook this on high for half the amount of time too. It’s okay if this cooks for a bit longer (hence overnight). Just add some liquid in and stir and it’ll be all good!

overhead shot of white bowl with apple cinnamon oats and toppings (pecans and fresh apples)

What’s the difference between steel cut oats and old fashioned oats/rolled oats or quick cook oats?

It comes down to texture, processing, and cooking time.

Steel cut oats are oat groats that have been cut into two or three pieces and they’re relatively unprocessed while old fashioned/rolled oats are made by steaming and rolling the oat groats for faster cooking. Quick cook oats are the same but cut into smaller pieces for even faster cooking.

Can I make this in the Instant Pot?

I haven’t tried this with the pressure cooking function but the slow cooker function on the Instant Pot would work.

a closer overhead shot of white bowl with apple cinnamon oats and toppings (pecans and fresh apples)

Is it safe to have a slow cooker run overnight?

Absolutely. People leave their slow cookers on during the day to cook their meals.

Again, freakier things have happened so I’m not liable for anything.

I kept waking up in the middle of the night from the apple cinnamon smell but it didn’t bother me – my stomach was what was bothering me! It was wanting some of that oatmeal!

I’m going to be making more varieties of this in my crockpot because of all the leftovers I get with it. I love scooping a hefty amount in Tupperware and bringing it into work for a warm breakfast. It’s filling too so I’m not starving by 11am.

Slow Cooker Overnight Apple Cinnamon Oats

Throw the ingredients in your slow cooker before bed and you’ll have warm overnight apple cinnamon oats ready when you wake up!
4.15 from 7 votes
Prep Time: 15 minutes
Cook Time: 7 hours
Total Time: 7 hours 15 minutes
Servings: 4
Author: Julie Chiou
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  • 3 apples, cored and cut into ½ inch cubes
  • 1 ½ cup (366 g) 2% milk
  • 1 cup (236 g) apple cider
  • ½ cup (118 2/7 g) water
  • 1 cup (160 g) steel-cut oats, heaping
  • 2 tablespoon dark brown sugar
  • ½ teaspoon ground cinnamon
  • 1 tablespoon ground flax seed
  • ¼ teaspoon salt
  • Optional garnishes: nuts,dried fruit, bananas

The default measuring system for this website is US Customary. Unit conversions are provided for convenience and as a courtesy only. While we strive to provide accurate unit conversions, please be aware that there may be some discrepancies.



  • Coat the inside of your crockpot generously with cooking spray. You will NOT want to miss this step cause otherwise you will be standing over the sink scraping the little sucker.
  • Add all the ingredients to the crockpot (minus the garnishes), stir, cover, and cook on low for 3-4 hours or high for 1.5-2 hours.
  • Serve hot and with garnishes, if desired.
  • To reheat: put oatmeal in microwave-safe bowl and add a splash or two of milk to re-moisten it up. Zap it for 30 seconds, take it out, stir it around, then zap for another 10-20 seconds.



Serving: 1 Serving | Calories: 240 kcal | Carbohydrates: 48 g | Protein: 6 g | Fat: 4 g | Fiber: 6 g | Sugar: 31 g

This website provides approximate nutrition information for convenience and as a courtesy only. Nutrition information can vary for a variety of reasons. For the most precise nutritional data use your preferred nutrition calculator based on the actual ingredients you used in the recipe.

Course: Breakfast
Cuisine: American
Keyword: apple, apple cider, cinnamon, oats

Photography by Eat Love Eats

Recipe Rating


Sunday 16th of July 2023

Doubled the recipe and used almond milk to replace the dairy. Cooked it on low for about 6 hours overnight, then switched to warm when I got up. Used a crock pot liner and it did not burn, that was a major concern for me. It sat in the crock for another hour on warm while waiting for everyone to get out of bed. It was a big hit. What an easy and delicious way to serve breakfast to a group of 11. I think what sets it apart from other recipes is the apple cider JUICE. It gives the oatmeal an extra apple taste.

Tiffany & Liger & Noon

Saturday 1st of October 2022

Loved making this at 11 pm, cozying down for bed, and then eating it in the morning in front of my envious corgis. I overcooked it by a couple of hours and it turned out drier than I would have liked so I recommend adding extra liquid if you want to sleep in.


Saturday 1st of October 2022

These were so simple, easy and yummy! I used my Ninja Foodi slow cooker setting and it was so easy to just scoop into a mason jar to bring to the office the next morning. I added walnuts and a scoop of plain Greek Yogurt on top and loved that. If you like it sweet maybe add more brown sugar but I found it to be perfect.

scott sproat

Saturday 1st of October 2022

i have quick cooking oats. will that do? shorter time in the crock pot maybe?

Julie Chiou

Saturday 1st of October 2022

you can, it's just not recommended. it'll cook super fast. like 1-2 hours and i'm not sure if the consistency will be good - might be a tad too mushy...but that's kind of what oatmeal is, right? haha


Wednesday 9th of February 2022

They turned out a mushy mess...what went wrong

Julie Chiou

Wednesday 9th of February 2022

could you please elaborate and/or be more descriptive? it's hard to diagnose general statements like that as i wasn't there with you as you made the recipe. some answers to these questions may be helpful:

1. what kind of oats did you use? 2. how much liquid did you use? 3. how long did you cook this for? 4. did you use a slow cooker or something else?