Apple Crumble with Oats

This warming, tender, and flavorful apple crumble with oats is a great dessert for holidays, other special occasions, or really any night of the week!

Save

Maybe you’re looking for a cozy fall dessert, or maybe you’re too intimidated to make a complicated pie with homemade crust, whatever reason you have for wanting something simple and comforting, this apple crumble with oats is the answer.

It’s a lot more manageable than pie, it comes together in one bowl with no fuss, and it’s done in less than an hour! Plus, this crumble is topped with a buttery oat mixture that bakes into golden, nutty clusters with an extraordinary crunchy texture, and the flavor is absolutely incredible!

Ingredients in Apple Crumble with Oats

Every ingredient in this recipe works toward either a perfectly spiced filling or the most satisfyingly crunchy, nutty topping imaginable.

Save

How to Make Apple Crumble with Oats

This recipe comes together in two simple stages preparing the spiced apple filling and making the oat crumble topping before a long, unhurried bake in the oven.

1. Prepare and season the apples

Preheat your oven to 350°F (175°C). Peel, core, and slice the apples into ½-inch pieces not too thin or they will turn completely to mush, not too thick or they won’t cook through in the center. In a large bowl, toss the apple slices with the brown sugar, cornstarch, cinnamon, nutmeg, lemon juice, and vanilla extract until every piece is evenly coated.

2. Fill the baking dish

Transfer the seasoned apple mixture into a 9×13-inch baking dish or a deep 9-inch square dish, spreading it into an even layer. The apples will shrink and sink significantly as they cook, so don’t worry if the dish looks overfull at this stage.

3. Make the oat crumble topping

In a large bowl, whisk together the flour, rolled oats, brown sugar, cinnamon, and a pinch of salt. Add the cold cubed butter and use your fingers to work it in, rubbing and pressing until the mixture forms large, irregular clumps with some sandy bits remaining. You want plenty of big clusters these are what toast into those irresistible golden pieces on top.

4. Cover the filling and bake

Scatter the crumble topping evenly over the apple filling in the dish, covering it completely all the way to the edges. Press it down very lightly just enough to help it adhere, not so much that you pack it into a solid layer. Bake for 40 to 45 minutes, until the topping is deep golden brown and the apple filling is bubbling visibly at the edges.

5. Rest before serving

Remove from the oven and let the crumble rest for at least 10 minutes before serving. The filling will be extremely hot and slightly loose straight from the oven, but it thickens and settles beautifully as it cools for a few minutes.

Save

How to Serve Apple Crumble with Oats

This crumble is best served warm, straight from the baking dish, in generous scoops onto wide bowls or plates. I always serve it with a large scoop of vanilla ice cream melting into the warm filling that contrast of cold, creamy ice cream and hot, spiced apple is one of the great dessert experiences.

For an equally classic option, serve it with a generous pour of warm vanilla custard instead of ice cream. The custard pools around the crumble in the most inviting way and makes the whole dessert feel deeply old-fashioned and wonderful.

It also reheats beautifully the next day, making it an ideal make-ahead dessert for dinner parties bake it the day before and reheat gently in a low oven before serving.

Recipe Tips

• Use a mixture of apple varieties for the most complex, balanced filling tart Granny Smiths keep their structure while sweeter varieties melt into the sauce.
• Keep the butter cold when making the topping warm butter creates a paste rather than the chunky, crispy clusters you want.
• Don’t skip the cornstarch it’s what turns the released apple juices into a luscious, glossy filling instead of a watery puddle.
• Use old-fashioned rolled oats rather than quick oats they hold their texture and toast up into proper crunchy clusters during baking.
• Add ½ cup of chopped pecans or walnuts to the topping for an extra layer of nutty richness and crunch.
• The crumble is done when the topping is deeply golden and the filling is visibly bubbling at the edges pale golden means it needs more time.
• Store leftovers covered at room temperature for one day, or refrigerated for up to three days.
• Reheat individual portions in a 325°F oven for 15 minutes to restore the crispiness of the topping.