Most apple crisps come out of the oven with a soggy topping and a runny bottom. Not this one. Think deep golden oat clusters over apples that hold their shape in a thick, cinnamon filling that doesn’t flood the dish. That’s my Apple Crisp. One bowl for the apples, one for the topping, done in just over an hour.
Easy Apple Crisp with Oat Topping
Apple crisp was the first dessert I ever made that people asked for twice. It’s forgiving. You don’t roll anything out. There’s no crust to chill, no lattice to weave, nothing that punishes you for being in a hurry. You slice apples, you stir up some oats and butter, and the oven handles the rest.
I make it all fall and most of the winter. When the apples get cheap in October, this is what happens to them. And it’s good enough to serve to company but easy enough to make on a Tuesday, which is a short list of desserts.
What Makes the Topping Crisp Instead of Soggy
Melted butter. Not cold butter cut in, not softened butter creamed with sugar. Melted, poured over the dry stuff, stirred until it clumps.
Cold butter is for pie crust, where you want it to stay in little pieces and make flaky layers. That’s a different goal. Here you want clusters that bake into something crunchy, and melted butter coats every oat so the whole topping crisps instead of just the surface.
When you stir it, it’ll look like wet sand that’s started clumping together. That’s exactly right. Don’t keep stirring until it’s smooth and paste like. Stop while there are still lumps in it, because those lumps are what you want to be eating.
Then scatter it over the apples and leave it loose. Don’t press it down. Don’t smooth the top. The ragged bits are the best part and packing it flat turns it into a lid.
The other half is the 2 tablespoons of flour in the apples. Apples let out a lot of water as they bake, and without something to catch it you get a puddle under a soggy topping. That bit of flour thickens the juices into a syrup instead.
Ingredients in Apple Crisp
- Apples (8 cups, peeled and sliced, about 6 medium): This is where the recipe is made or lost. Use a firm baking apple. Granny Smith is the classic, tart and it holds its shape. Honeycrisp, Braeburn, and Pink Lady all work. A mix of 2 kinds is even better. Avoid Red Delicious and McIntosh, they go to applesauce in the oven. Slice them about ¼ inch thick so they cook evenly.
- Granulated sugar (⅓ cup): Just enough to sweeten the apples. The topping brings plenty more, so there’s no need to go heavy here.
- All purpose flour (2 tablespoons, for the filling): The thickener. It turns the apple juices into a syrup instead of a puddle. Cornstarch works if that’s what you have, use 1 tablespoon.
- Lemon juice (1 tablespoon): Keeps the apples from browning while you slice, and brightens everything up. Fresh is better than bottled but either works.
- Ground cinnamon (1 teaspoon for the filling, ½ teaspoon for the topping) and nutmeg (¼ teaspoon): Cinnamon in both layers. Nutmeg only in the apples, and only a little. Freshly grated nutmeg is worth it if you’ve got a whole one rattling around in the cupboard.
- Old fashioned rolled oats (1 cup): Rolled oats, not quick oats and definitely not steel cut. Quick oats are cut too fine and go powdery. Steel cut won’t soften in time and you’ll be chewing on little pebbles.
- All purpose flour (¾ cup, for the topping) and brown sugar (¾ cup, packed): The flour holds the clusters together and the brown sugar brings that caramel edge. Light or dark brown both work, dark gives you a deeper flavor.
- Salt (¼ teaspoon): Small amount, big difference. Without it the topping tastes flat and oversweet.
- Unsalted butter (½ cup, melted): Melted, as covered above. If all you have is salted, use it and cut the added salt to a pinch.
How to Make Apple Crisp
Heat the oven: Set your oven to 350°F and grease a 9 by 13 inch baking dish. Butter, cooking spray, whatever you reach for first.
Toss the apples: In a large bowl, toss the sliced apples with the granulated sugar, flour, lemon juice, cinnamon, and nutmeg until every slice is coated. It’ll look like a lot of apples and the bowl will feel too full. That’s right, they cook down. Spread them into the baking dish.
Make the topping: In another bowl, stir together the oats, flour, brown sugar, cinnamon, and salt. Pour in the melted butter and stir until the mixture clumps together. You’re looking for damp, sandy clusters, not a smooth paste. Stop while it’s still lumpy.
Scatter it over: Spread the topping over the apples, leaving plenty of clumps for texture. Don’t pack it down and don’t smooth it flat.
Bake it: Bake 40 to 45 minutes, until the topping is deep golden and the filling is bubbling up around the edges. You want to see that bubbling. If the top is browning faster than the apples are cooking, tent it loosely with foil for the last 10 minutes.
Let it cool: Give it 10 minutes before you serve it. The filling thickens as it sits, and straight out of the oven it’ll be molten in a way that nobody’s mouth appreciates. Serve warm, ideally with vanilla ice cream.
Tips
- Slice the apples evenly, about ¼ inch. Uneven slices mean some turn to mush before others are tender.
- Don’t skip the flour in the filling. It’s the difference between syrup and soup.
- Leave the topping loose and clumpy. Pressing it down makes it a crust instead of a crisp.
- Watch for the bubbling at the edges. That’s your doneness signal, more reliable than the color on top.
- Let it rest 10 minutes. The filling needs it and so does your mouth.
Substitutions and Variations
- Swap the granulated sugar in the filling for maple syrup, about ¼ cup, for a deeper flavor.
- Use half whole wheat flour in the topping for a nuttier, heartier texture.
- Make it gluten free with a 1 to 1 gluten free flour blend and certified gluten free oats.
- I haven’t tested these myself so treat them as suggestions rather than part of the recipe, but a half cup of chopped pecans or walnuts stirred into the topping would add crunch, and swapping half the apples for pears would be lovely in late fall.
Make Ahead and Storage
You can assemble the whole thing and refrigerate it unbaked for up to 24 hours. Add about 5 minutes to the bake time since it’s going in cold.
Leftovers keep covered in the fridge up to 4 days. The topping softens as it sits, which is just how it goes.
Reheat in a 350°F oven for 15 to 20 minutes to bring the crisp back. The microwave works for a single serving, about 1 minute, though the topping stays soft.
It freezes baked or unbaked, up to 3 months. Thaw overnight in the fridge, then reheat in the oven.
What to Serve With Apple Crisp
- Vanilla ice cream, warm crisp, cold ice cream. That’s the whole thing.
- Whipped cream if ice cream isn’t your style.
- A drizzle of heavy cream straight from the carton, which is how my mom’s generation did it and is still excellent.
- Coffee, if it’s that kind of afternoon.
Other Recipes You’ll Love
- Old Fashioned Apple Fritters – If you’ve got apples left over, these are the craggy bakery style fritters I grew up making.
- Apple Pie – When you want to do the whole thing properly, crust and all.
- Apple Crumble – Same spirit, a softer buttery topping.
- Caramel Apple Crisp Bars — Everything you like about apple crisp, cut into squares you can pick up with your hands.
Apple Crisp
Ingredients
For the filling
- 8 cups apples, peeled and sliced, about 6 medium
- ⅓ cup granulated sugar
- 2 tablespoons all purpose flour
- 1 tablespoon lemon juice
- 1 teaspoon ground cinnamon
- ¼ teaspoon ground nutmeg
For the topping
- 1 cup old fashioned rolled oats
- ¾ cup all purpose flour
- ¾ cup brown sugar, packed
- ½ teaspoon ground cinnamon
- ¼ teaspoon salt
- ½ cup unsalted butter, melted
Instructions
- Preheat your oven to 350°F (175°C) and grease a 9 by 13 inch baking dish.
- In a large bowl, toss the 8 cups sliced apples with the ⅓ cup granulated sugar, 2 tablespoons flour, 1 tablespoon lemon juice, 1 teaspoon cinnamon, and ¼ teaspoon nutmeg until evenly coated. Spread into the baking dish.
- In another bowl, stir together the 1 cup rolled oats, ¾ cup flour, ¾ cup brown sugar, ½ teaspoon cinnamon, and ¼ teaspoon salt. Pour in the ½ cup melted butter and stir until the mixture clumps together.
- Scatter the topping evenly over the apples, leaving some clumps for texture.
- Bake for 40 to 45 minutes, until the topping is deep golden and the filling is bubbling around the edges.
- Let it cool for 10 minutes, then serve warm, ideally with a scoop of vanilla ice cream.
Recipe Notes
- Apples. Use firm baking apples like Granny Smith, Honeycrisp, Braeburn, or Pink Lady. A mix of 2 kinds is best. Avoid Red Delicious and McIntosh, they break down too much. Slice about ¼ inch thick.
- Melted butter only. Cold butter cut in gives you a pastry topping, not a crisp one. Melted butter coats every oat.
- Don’t pack the topping down. Scatter it loosely and leave the clumps. Pressing it flat turns it into a crust.
- Don’t skip the flour in the filling. It thickens the apple juices so the bottom doesn’t go watery.
- Watch for bubbling. The filling should bubble around the edges. If the top browns too fast, tent with foil for the last 10 minutes.
- Rest 10 minutes. The filling sets as it cools.
- Make ahead. Assemble and refrigerate unbaked up to 24 hours, then add about 5 minutes to the bake.
- Storage. Covered in the fridge up to 4 days. Reheat at 350°F for 15 to 20 minutes to bring the topping back. Freezes up to 3 months.
Nutrition Information
Frequently Asked Questions
Crisp has oats in the topping. Crumble doesn’t, it’s just flour, butter, and sugar. The oats are what make it crisp up. Sometimes the terms are used interchangeably.
Firm, tart baking apples. Granny Smith, Honeycrisp, Braeburn, Pink Lady. A mix of 2 kinds gives you the best flavor. Skip Red Delicious and McIntosh, they break down too much.
I do. The skins get leathery and separate from the flesh as they bake. You can leave them on if you like the rustic look, it just changes the texture.
Either the flour got skipped, or the apples were a softer variety that released too much liquid. Give it a few more minutes in the oven and let it rest longer before serving.
Usually it got packed down. Scatter it loosely and leave the clumps. Soft apples that flooded the dish will do it too.
Yes, in 2 separate 9 by 13 dishes. Doubling in one deep dish means the middle won’t cook through.
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