Easy 8-Hour Crockpot Apple Cinnamon Oatmeal

This crockpot apple cinnamon oatmeal cooks all night while you sleep, so a warm, creamy breakfast is waiting the moment you wake up. Sweet apples and cinnamon melt right into the oats as they simmer low and slow. It’s the closest thing to a hot breakfast made by someone else.

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Why You’ll Love This Crockpot Apple Cinnamon Oatmeal

  • Zero morning effort. Everything goes into the crockpot before bed, so breakfast is completely done when you wake up.
  • Naturally sweet. The apples soften and sweeten the whole pot, so you need very little added sugar.
  • Great for meal prep. Portion it into containers for grab-and-go breakfasts all week.

What You’ll Need

  • 1 1/2 cups steel-cut oats — steel-cut oats hold their texture over a long cook time; old-fashioned or quick oats will turn to mush.
  • 4 cups liquid (2 cups milk and 2 cups water) — the water keeps the oats from drying out or scorching; use any milk you like, dairy or non-dairy.
  • 3 medium apples, cored and diced — firm baking apples like Honeycrisp, Fuji, or Gala hold their shape best.
  • 1 1/2 teaspoons ground cinnamon — the backbone flavor of the whole dish.
  • 1/4 teaspoon ground nutmeg — a small warm-spice boost that pairs naturally with cinnamon.
  • 3 tablespoons brown sugar — just enough to sweeten; taste and adjust once it’s cooked.
  • 1/4 teaspoon salt — balances the sweetness.
  • Nonstick spray, for the crock — oats stick and scorch at the edges without it.

How to Make Crockpot Apple Cinnamon Oatmeal

  1. Grease the inside of a 3- to 4-quart crockpot generously with nonstick spray.
  2. Add the diced apples to the bottom of the crock, then sprinkle the cinnamon, nutmeg, brown sugar, and salt over them.
  3. Pour the steel-cut oats over the apples in an even layer, then pour the milk and water on top. Do not stir.
  4. Cover and cook on LOW for 7 to 8 hours, without lifting the lid, until the oats are tender and creamy.
  5. Stir well before serving, and add a splash of extra milk if you like it looser.

Tips for Success

  • Don’t lift the lid. Every peek lets out heat and adds cooking time. Set it and walk away until morning.
  • Use a smaller crockpot. A 3- to 4-quart crockpot cooks oatmeal more evenly than a large 6-quart one, where the edges can scorch before the center is done.
  • Grease it well. This is the step people forget, and it’s why oatmeal sticks to the sides. A generous coat of nonstick spray makes cleanup much easier.

Variations to Try

  • Pumpkin spice swap. Replace the apples with 1 cup pumpkin puree and swap the cinnamon for pumpkin pie spice.
  • Nutty crunch. Stir in 1/2 cup chopped pecans or walnuts right before serving for texture.
  • Dried fruit mix-in. Add 1/2 cup raisins or dried cranberries along with the apples for extra sweetness.
  • Skip the extra brown sugar and top each bowl with a spoonful of our Crockpot Apple Butter instead.

What to Serve With Crockpot Apple Cinnamon Oatmeal

A bowl of this oatmeal is filling on its own, but a splash of extra milk and a handful of chopped nuts turn it into something special.

For a bigger breakfast spread, set it out alongside Healthy Apple Cinnamon Muffins — you’ll have the whole kitchen smelling like a bakery.

It also keeps well for meal prep, so pair it with our Baked Oatmeal Cups for two different make-ahead breakfast options in the fridge at once.

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FAQs

Can I make crockpot apple cinnamon oatmeal ahead of time?

Yes — this is a great meal-prep breakfast. Portion cooled oatmeal into containers and refrigerate for up to 5 days, or freeze individual portions for up to 3 months.

Why is my slow cooker oatmeal mushy?

This usually means old-fashioned or quick oats were used instead of steel-cut. Steel-cut oats are firmer and built to hold up over a long, slow cook — the other kinds break down too fast.

Can I use water instead of milk?

You can, though the oatmeal will taste less rich. If you go all-water, stir in a splash of milk or cream at serving time to bring back some creaminess.

How do I reheat leftovers?

Add a splash of milk or water to loosen it up, then microwave in 30-second bursts, stirring between each, or warm it gently on the stovetop over medium-low heat.

Final Thoughts

There’s something so comforting about waking up to a breakfast that’s already made. This crockpot apple cinnamon oatmeal turns a handful of pantry staples into a warm, cozy start to the day.

Set it up tonight, and let tomorrow morning take care of itself.

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Crockpot Apple Cinnamon Oatmeal

A creamy, hands-off steel-cut oatmeal that cooks overnight with apples and warm spices.
Prep Time 10 minutes
Cook Time 8 hours
Total Time 8 hours 10 minutes
Servings 6 servings
Calories 280 kcal

Ingredients
  

  • 1 1/2 cups steel-cut oats
  • 2 cups milk dairy or non-dairy
  • 2 cups water
  • 3 medium apples, cored and diced Honeycrisp, Fuji, or Gala
  • 1 1/2 tsp ground cinnamon
  • 1/4 tsp ground nutmeg
  • 3 tbsp brown sugar
  • 1/4 tsp salt

Instructions
 

  • Grease the inside of a 3- to 4-quart crockpot generously with nonstick spray.
  • Add the diced apples to the bottom of the crock, then sprinkle the cinnamon, nutmeg, brown sugar, and salt over them.
  • Pour the steel-cut oats over the apples in an even layer, then pour the milk and water on top. Do not stir.
  • Cover and cook on LOW for 7 to 8 hours, without lifting the lid, until the oats are tender and creamy.
  • Stir well before serving, and add a splash of extra milk if you like it looser.

Notes

Refrigerate up to 5 days or freeze up to 3 months. Reheat with a splash of milk, stovetop or microwave.

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