This slow cooker apple crisp is a practical dessert for those who want tender apples and a crunchy oat topping without using an oven. It is designed for easy preparation and is ideal for feeding larger groups during autumn.

List of ingredients

6 Fuji apples (peeled and sliced) – use a crisp variety to maintain structure.
2 tbsp granulated sugar – used to sweeten the apple base.
1 tsp cinnamon – provides a warm, aromatic flavor.
½ tsp nutmeg – adds a subtle depth to the fruit.
¾ cup brown sugar – creates the caramelized sweetness in the topping.
¾ cup old fashioned oats – ensures a hearty, crunchy texture.
½ cup all-purpose flour – binds the oat crumble together.
8 tbsp unsalted butter (diced into ½” cubes) – creates a crumbly, rich topping.

step-by-step instructions

Prepare the fruit: Add the sliced apples, granulated sugar, cinnamon, and nutmeg to a large mixing bowl. Stir to combine the spices evenly, then transfer the mixture to the slow cooker and spread it out in an even layer.
Create the crumble: Combine brown sugar, old-fashioned oats, and all-purpose flour in a separate large mixing bowl. Add the diced butter and cut it into the dry ingredients using two forks or a pastry cutter until the mixture is crumbly.
Assemble: Spread the prepared oat mixture evenly over the top of the apples in the slow cooker.
Cook: Cover the slow cooker and cook on the high setting for 2 hours.
Cool and serve: Switch the slow cooker to the warm setting and remove the cover. Let the crisp cool for 30 minutes before serving.

Choosing the Best Apple Varieties

Using Fuji Apples for Sweetness

Fuji apples are an excellent choice because they possess a natural sweetness and a firm texture. This prevents them from turning into applesauce during the two-hour slow cooking process.

Granny Smith for Tartness

If you prefer a more tart dessert, Granny Smith apples are the best alternative. Their high acidity balances the sugar in the oat topping, providing a sharp contrast in flavor.

Braeburn and Jonagold Options

Braeburn and Jonagold apples are balanced varieties that hold their shape well under heat. They offer a mix of sweet and tart notes that work well with cinnamon and nutmeg.

Cortland Apples for Color

Cortland apples are known for staying white longer after being sliced. They have a mild flavor and a crisp texture that holds up well in a slow cooker environment.

Avoiding Mealy Varieties

Avoid using Red Delicious or other mealy apple types for this recipe. These varieties tend to break down quickly and lose their structure, resulting in a mushy consistency.

Customizing Your Apple Crisp

Adding Fresh Blueberries

Blueberries can be sprinkled into the apple mixture before cooking for a mixed-fruit crisp. They add a burst of color and a different tartness to the dessert.

Incorporating Raspberries or Blackberries

For a more intense berry flavor, add raspberries or blackberries halfway through the cooking time. Adding them later prevents them from breaking down too much into the apples.

Adding Chopped Pecans

Mix a handful of chopped pecans into the oat topping before spreading it over the apples. The nuts add a buttery flavor and an extra layer of crunch to the crumble.

Including Walnuts

Walnuts provide a slightly bitter contrast to the sweet brown sugar topping. Chop them finely and stir them into the flour and oat mixture for a nutty finish.

Using Dried Cranberries

Stir dried cranberries into the apple mixture for a chewy texture and a tart flavor. This is particularly effective for holiday-themed desserts.

Adding Raisins

Raisins can be mixed with the sliced apples to add natural sweetness and a different texture. They plump up as they cook in the slow cooker juices.

Substituting Maple Syrup

You can replace the granulated sugar in the apple mixture with real maple syrup. This introduces a distinct autumn flavor and a richer syrup consistency to the fruit.

Drizzling with Salted Caramel

After the crisp has cooled, drizzle salted caramel over the top of each serving. The salt in the caramel enhances the sweetness of the apples and the brown sugar.

Secrets for the Perfect Topping Texture

The Importance of Rolled Oats

Use old-fashioned rolled oats rather than quick oats for this recipe. Rolled oats are larger and thicker, which provides the necessary chew and prevents the topping from becoming soggy.

Managing the Flour Ratio

The all-purpose flour acts as a binder for the butter and sugar. Do not reduce the flour amount, as it prevents the topping from separating into a greasy layer.

The Butter Cubing Technique

Dice the butter into small half-inch cubes while it is cold. Cold butter creates distinct pockets of fat that steam and crisp up, resulting in a better crumble texture.

Using a Pastry Cutter

A pastry cutter is the most efficient tool for incorporating butter into the dry ingredients. It ensures the butter is evenly distributed without overworking the flour.

Avoiding Overmixing

Stop mixing the topping as soon as it resembles coarse crumbs. Overmixing can cause the butter to melt and the topping to become a paste rather than a crumble.

Slow Cooker Management and Optimization

Using Slow Cooker Liners

To make cleanup easier, place a slow cooker liner in the pot before adding the apples. If you do not have liners, spray the interior with a non-stick cooking spray.

The Importance of Keeping the Lid Closed

Avoid opening the lid to check the progress of the apples. Each time the lid is lifted, a significant amount of heat escapes, which can increase the total cooking time by 30 minutes.

High vs Low Heat Settings

This recipe is optimized for the high setting to ensure the apples soften while the topping stays distinct. Using the low setting may result in overly soft apples by the time the top is cooked.

Managing the Cooling Phase

The 30-minute cooling period is essential for the topping to set. Removing the lid during this time allows excess steam to escape, which helps the crumble firm up.

Storage and Reheating Guidelines

Refrigeration Best Practices

Store any leftover apple crisp in an airtight container in the refrigerator for 3 to 5 days. Keep the container sealed to prevent the crisp from absorbing other fridge odors.

Oven Reheating for Texture

To reheat, place the crisp in a 350°F oven until it is warmed through. This is the best method for maintaining the overall structure of the dessert.

Using the Broiler to Recrisp

Refrigerated oat toppings often become soft. A quick session under a low broiler for 1 to 2 minutes can restore the crunch, but watch it closely to prevent burning.

Why Freezing is Not Recommended

Freezing this recipe is not advised because the moisture in the apples migrates into the topping. Upon thawing, the topping becomes mushy and loses its characteristic crunch.

Make-Ahead and Batch Cooking

Overnight Assembly Instructions

You can assemble the apples and topping the night before and store the entire slow cooker in the fridge. Start the cooking process the next morning, noting that it may need extra time to heat through.

Tips for Doubling the Recipe

When doubling the ingredients, use a larger slow cooker to avoid overcrowding. You may need to cook the apples alone for 30 minutes before adding the topping to ensure even cooking.

Adjusting for Cold Starts

If the ingredients are added cold from the refrigerator, the cook time may increase by 30 to 60 minutes. Check the tenderness of the apples before switching to the warm setting.

Serving Suggestions

Classic Vanilla Ice Cream Pairing

The most traditional way to serve this dish is with a large scoop of vanilla ice cream. The cold cream melts into the warm apples and cinnamon, creating a rich sauce.

Whipped Cream and Spice Garnish

For a lighter alternative, top the crisp with freshly whipped cream. A light dusting of cinnamon or pumpkin pie spice on the cream adds a professional visual touch.

Main Course Meal Pairings

This dessert pairs well with hearty savory meals like beef stew or chicken and dumplings. The tartness of the apples cleanses the palate after a rich, salty main course.

Frequently Asked Questions

Can I use quick oats instead of old fashioned oats?

No, quick oats are too fine and will absorb too much moisture, resulting in a mushy topping. Rolled oats are necessary for the desired crunch.

Do the apples need to be peeled?

While you can leave the skins on, peeling them provides a more consistent and tender texture. The skins can sometimes feel tough against the soft cooked fruit.

How do I know when the apple crisp is finished?

The apples should be tender when pierced with a fork, and the topping should be set and fragrant. The juices from the apples will have thickened into a syrup.

Can I use a different sugar in the topping?

Brown sugar is used for its molasses flavor and moisture. Substituting it with white sugar will result in a crispier but less flavorful and less caramelized topping.

Slow Cooker Cinnamon Apple Crisp

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Author: rachelthompson
Total Time: 165 minutes
Yield: 6 servings 1x
Diet: General

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Description

Gooey apples, crispy oat topping, melted vanilla ice cream over top…yes please! This is one of my favorite Crock Pot desserts because all you have to do is slice up the apples, lay the oat crumble on top, and let the slow cooker take it from there.

Ingredients

Scale

6 Fuji apples (peeled and sliced)
2 tbsp granulated sugar
1 tsp cinnamon
½ tsp nutmeg
¾ cup brown sugar
¾ cup old fashioned oats
½ cup all-purpose flour
8 tbsp unsalted butter (diced into ½” cubes)

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Instructions

Step 1: Add sliced apples, granulated sugar, cinnamon, and nutmeg to a large mixing bowl. Stir to combine, then transfer to the slow cooker and spread out evenly.
Step 2: Add brown sugar, old-fashioned oats, and all-purpose flour to a large mixing bowl. Mix everything together. Then, add cubed butter and cut it into the oat mixture with two forks or a pastry cutter.
Step 3: Spread the mixture over the apples in the slow cooker.
Step 4: Cover and cook on high for 2 hours. Turn on warm and remove the cover, and cool for 30 minutes.
Step 5: Serve warm and enjoy!

Notes

Make Ahead of Time: You can assemble the dish the night before, store it in the fridge, then start it the day you want to serve it. Keep the Lid On: Avoid taking the lid off to peek inside the slow cooker while this dish is cooking. Cooling Time: Every Crock Pot is a little different, so you might need less than 30 minutes for the dish to cool.

Prep Time: 15 minutes
Cook Time: 150 minutes
Category: Dessert
Method: Slow Cooker
Cuisine: American

Nutrition

Serving Size: 1 serving
Calories: 426 kcal
Sugar: 50 g
Sodium: 12 mg
Fat: 16 g
Saturated Fat: 10 g
Unsaturated Fat: 5 g
Trans Fat: 1 g
Carbohydrates: 71 g
Fiber: 6 g
Protein: 3 g
Cholesterol: 40 mg