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.
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.
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.
Spread the mixture over the apples in the slow cooker.
Cover and cook on high for 2 hours. Turn on warm and remove the cover, and cool for 30 minutes.
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. It may need to cook a bit longer since it's starting from cold.
When Doubling the Recipe: You may need to increase the cook time and play around with cooking the apples for a while, giving them a good stir, then adding the topping for the remaining time.
Keep the Lid On: Avoid taking the lid off to peek inside the slow cooker while this dish is cooking. That can slow down the cooking time by about 30 minutes each time you check.
Cooling Time: Every Crock Pot is a little different, so you might need less than 30 minutes for the dish to cool. The first time you make this, just keep an eye on it and test every 15 minutes to get that perfect temperature.