Apple crisp with oats is the cozy, chewy-crunchy dessert that fills the house with cinnamon and brown sugar. Sweet and tart apples bake until bubbly under a thick oat topping, and a little cornstarch turns their juices into a jammy filling that never turns watery.
The recipe is easy enough for beginners and sturdy enough for company. You toss the apples, mix the topping with your fingers, and let the oven do the work. It makes eight generous servings in a 9×13 inch dish, so there is plenty to share or enjoy the next day.
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Why This Apple Crisp with Oats Recipe Works
Seven cups of apples give this dessert a deep fruit layer, and one quarter cup of cornstarch thickens the juices into a glossy filling. That means you can scoop clean portions instead of chasing apple soup around the dish.
The topping combines rolled oats, flour, brown sugar, cinnamon, and salt with cold butter. Cutting the butter in until the mixture looks like coarse crumbs creates a topping that bakes up crisp on top and tender underneath.
Ingredients for Apple Crisp with Oats
- 7 cups peeled and sliced apples (use a mix of sweet and tart apples)
- 1/2 cup brown sugar, packed, for the filling
- 1/4 cup cornstarch
- 1 teaspoon ground cinnamon
- 1/2 teaspoon ground nutmeg
- 1 cup old-fashioned rolled oats
- 1/2 cup all-purpose flour (gluten-free flour works)
- 1/2 cup brown sugar, packed, for the topping
- 1/2 teaspoon ground cinnamon
- 1/2 teaspoon kosher salt
- 1/2 cup unsalted butter, cold and cut into pieces
Apples. A mix of sweet and tart apples gives the best flavor. Granny Smith keeps its shape and adds tang, while Honeycrisp or Gala bring natural sweetness.
Cornstarch. It thickens the juices so the filling sets while it cools. Toss it with the sugar and spices first so it coats the apples without clumping.
Rolled oats. Old-fashioned oats stay distinct and chewy. Instant oats become pasty, so avoid them in this topping.
Cold butter. Cold pieces create pockets of steam and a crumbly texture. Work quickly so the butter does not melt into the flour.
How to Make Apple Crisp with Oats
1. Heat the oven. Preheat the oven to 350 degrees F and grease a 9×13 inch baking dish.
2. Coat the apples. In a large bowl, toss the sliced apples with 1/2 cup brown sugar, the cornstarch, 1 teaspoon cinnamon, and the nutmeg until no dry cornstarch remains.
3. Fill the dish. Pour the apples into the dish and spread them evenly so they bake at the same pace.
4. Mix the topping. In another bowl, stir the oats, flour, 1/2 cup brown sugar, 1/2 teaspoon cinnamon, and salt. Add the cold butter and rub it in with your fingers or a pastry cutter until the mixture looks like coarse crumbs.
5. Top and bake. Sprinkle the topping over the apples and bake 35 to 40 minutes, until the top is golden brown and the filling bubbles around the edges.
6. Cool. Rest the dish for 10 minutes so the filling thickens before serving.
How to Serve Apple Crisp with Oats
Serve the warm crisp with vanilla ice cream or whipped cream. For an apple dessert table, add apple hand pies for guests who like handheld treats, and dutch caramel apple pie for a showstopper. In summer, an easy peach crisp uses the same oat topping idea, and fresh apple pie makes a classic finish for holiday dinners.
How to Store and Reheat Apple Crisp with Oats
Cool the dish, cover it, and refrigerate within 2 hours. Leftovers keep for 3 to 4 days in the refrigerator. Warm individual servings in a 350 degree F oven for about 10 minutes, or microwave for a softer topping, until heated through.
Tips and Variations for Apple Crisp with Oats
Mix your apples. A blend of sweet and tart apples gives layered flavor. Slice them about the same thickness for even baking.
Keep the butter cold. Cold butter makes a crisper topping. If your kitchen is warm, chill the topping for 10 minutes before spreading.
Use the right oats. Old-fashioned rolled oats give the best texture for apple crisp with oats. Quick oats work but give a softer finish.
Make it gluten-free. Replace the flour with a gluten-free flour blend and check that your oats are labeled gluten-free.
Try nuts. Chopped pecans or walnuts stirred into the topping add crunch and a toasty flavor.
Store leftovers well. Refrigerate promptly and review the Texas A&M AgriLife Extension food safety brochure for general guidance.
Frequently Asked Questions About Apple Crisp with Oats
What is the best way to make apple crisp with oats crisp on top?
Use cold butter, old-fashioned oats, and an even layer of topping. Bake until the top is deep golden brown and the filling is bubbling.
Can I prepare apple crisp with oats ahead of time?
Yes. Assemble it, cover, and refrigerate until you are ready to bake, then add a few minutes to the baking time if the dish goes in cold.
Do I need to peel the apples for apple crisp with oats?
Peeling gives a smoother, more tender filling. If you leave the skins on, slice the apples thinly so the skins soften.
Why add cornstarch to the apples?
Cornstarch thickens the juices into a glossy filling so the dessert holds together when scooped.
Can I freeze this crisp?
Many people freeze baked crisp in portions, but the oat topping is crispest when fresh, so refrigerate it and reheat in the oven for the best texture.
Apple Crisp with Oats
Equipment
- 9×13 inch baking dish
- Large mixing bowl
- Pastry cutter
- Knife
Ingredients
Main Ingredients
- 7 cups apples peeled and sliced; use a mix of sweet and tart
- ½ cup brown sugar packed, for the filling
- ¼ cup cornstarch
- 1 tsp ground cinnamon
- ½ tsp ground nutmeg
- 1 cup old-fashioned rolled oats
- ½ cup all-purpose flour gluten-free flour works
- ½ cup brown sugar packed, for the topping
- ½ tsp ground cinnamon
- ½ tsp kosher salt
- ½ cup unsalted butter cold and cut into pieces
Instructions
Cooking
- Heat the oven. Preheat to 350 degrees F and grease a 9×13 inch baking dish.
- Coat the apples. Toss the apples with 1/2 cup brown sugar, cornstarch, 1 tsp cinnamon, and nutmeg, then pour into the dish.
- Mix the topping. Stir the oats, flour, 1/2 cup brown sugar, 1/2 tsp cinnamon, and salt, then rub in the cold butter until coarse crumbs form.
- Top and bake. Sprinkle the topping over the apples and bake 35 to 40 minutes, until golden and bubbling.
- Cool. Rest 10 minutes so the filling thickens.
