Slow Cooker Apple Crisp

Why You’ll Love This Recipe

This slow cooker version of a classic apple crisp is incredibly easy to make and doesn’t require you to turn on the oven. The apples become soft and flavorful, while the crumbly topping crisps up beautifully, creating the perfect contrast in texture. It’s great for serving a crowd, and even better when topped with a scoop of vanilla ice cream or a drizzle of caramel sauce.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

• Apples (such as Granny Smith or Honeycrisp, peeled and sliced)

• Granulated sugar

• Brown sugar

• Ground cinnamon

• Nutmeg

• Lemon juice

• Cornstarch (optional, for thickening)

• Old-fashioned oats

• All-purpose flour

• Unsalted butter (melted)

• Salt

• Vanilla extract

Directions

1. Peel, core, and slice the apples, then place them in a large bowl.

2. Toss the apples with lemon juice, granulated sugar, brown sugar, cinnamon, nutmeg, and cornstarch (if using) until well coated.

3. Transfer the apple mixture to a lightly greased slow cooker.

4. In a separate bowl, mix together the oats, flour, brown sugar, cinnamon, salt, and melted butter until the mixture is crumbly.

5. Sprinkle the oat topping evenly over the apples in the slow cooker.

6. Cover and cook on low for 3–4 hours or on high for 2–2.5 hours, until the apples are tender and the topping is golden and crisp.

7. For an extra crispy topping, uncover the slow cooker during the last 30 minutes of cooking or place the topping under the broiler for a few minutes after transferring to a baking dish.

8. Serve warm, optionally with ice cream or whipped cream.

Servings and timing

Serves: 6–8
Prep time: 15 minutes
Cook time: 3–4 hours on low or 2–2.5 hours on high
Total time: approximately 3.5–4.5 hours

Variations

• Nutty topping: Add chopped pecans or walnuts to the oat topping for extra crunch and flavor.

• Gluten-free version: Use gluten-free oats and a gluten-free flour blend.

• Add berries: Mix in fresh or frozen berries like cranberries, blueberries, or raspberries with the apples.

• Spiced twist: Add cloves or allspice for a more complex fall spice blend.

• Maple version: Use maple syrup instead of some of the sugar for a deeper, richer sweetness.

Storage/Reheating

Store leftover apple crisp in an airtight container in the refrigerator for up to 4 days.

To reheat, microwave individual portions for 30–60 seconds, or warm in the oven at 350°F (175°C) for 10–15 minutes. For best texture, avoid reheating in the slow cooker.

To freeze, let the apple crisp cool completely, then store in a freezer-safe container for up to 2 months. Thaw overnight in the fridge before reheating.

FAQs

What type of apples are best for apple crisp?

Firm, tart apples like Granny Smith, Honeycrisp, or Fuji work best because they hold their shape and balance the sweetness.

Can I use quick oats instead of old-fashioned?

Old-fashioned oats give a better texture, but quick oats can be used in a pinch. The topping may be softer.

How do I make the topping crispier?

Uncover the slow cooker during the last 30 minutes or broil the topping for a few minutes in the oven after cooking.

Do I need to peel the apples?

Peeling is recommended for a softer texture, but you can leave the skins on for added fiber and a rustic feel.

Can I cook this overnight?

It’s not recommended to cook overnight unless using a programmable slow cooker, as the texture may become too soft.

Can I make this ahead of time?

Yes, you can prepare the apple and topping mixtures in advance and store them separately in the fridge until ready to cook.

Should I grease the slow cooker?

Yes, lightly grease the insert to prevent sticking and make cleanup easier.

Can I double the recipe?

Yes, but you may need a larger slow cooker and additional cooking time.

Is cornstarch necessary?

It’s optional, but it helps thicken the apple filling if your apples release a lot of juice.

Can I use pears instead of apples?

Yes, pears work well and provide a slightly different flavor and texture—feel free to mix them with apples, too.

Conclusion

Slow Cooker Apple Crisp is a comforting, low-effort dessert that captures the best of fall flavors in a warm, spoonable treat. With tender apples and a crisp oat topping, it’s a crowd-pleasing classic made easier than ever thanks to your slow cooker. Top it with ice cream or enjoy it as-is for a delicious finish to any meal.