There is something wonderfully comforting about the smell of apples and cinnamon bubbling away in the oven, and this easy apple crisp with oat crumble delivers that cozy feeling in every single bite. The apples turn soft and juicy while the oat topping bakes up crisp, buttery, and lightly caramelized, giving you the best textural contrast in one warm dish.
This is the kind of dessert you reach for when the weather starts to cool, when you have a bag of apples that need using, or when you want something homemade on the table without spending hours in the kitchen. It works just as well for a casual weeknight treat as it does for a holiday dinner, since it can be assembled ahead of time and popped in the oven whenever you are ready to serve it.
SaveI started making this apple crisp years ago after a trip to a local orchard left me with more apples than I knew what to do with, and it quickly became the recipe my family requests every time autumn rolls around. It is forgiving, it is simple, and it fills the whole house with the kind of smell that makes everyone wander into the kitchen asking what is baking.
Easy Apple Crisp with Oat Crumble
Ingredients
Apple Filling
Oat Crumble Topping
Instructions
- Preheat the oven and prep your dish
Preheat your oven to 350 degrees Fahrenheit and lightly grease a 9 by 13 inch baking dish with butter or nonstick spray. Set it aside while you prepare the filling so it is ready to go as soon as the apples are sliced.
- Peel and slice the apples
Peel, core, and slice the apples into even pieces about a quarter inch thick. Keeping the slices uniform in size helps them cook at the same rate, so you avoid mushy edges next to undercooked centers.
- Toss the apples with sugar and spices
In a large mixing bowl, combine the sliced apples with granulated sugar, brown sugar, flour, cinnamon, and nutmeg. Toss everything together with a spatula until every slice is evenly coated, which helps the filling thicken as it bakes.
- Add lemon juice and vanilla
Drizzle the lemon juice and vanilla extract over the apple mixture and toss again. The lemon juice brightens the flavor and keeps the apples from browning while you finish preparing the topping.
- Spread the filling in the baking dish
Pour the apple mixture into the prepared baking dish and spread it into an even layer using a spatula. Press down gently so the apples settle and there are no large gaps between the slices.
- Mix the dry crumble ingredients
In a separate bowl, whisk together the oats, flour, brown sugar, granulated sugar, cinnamon, and salt until well combined. Make sure there are no clumps of brown sugar left in the mixture.
- Cut in the cold butter
Add the cold, cubed butter to the dry ingredients and use your fingers or a pastry cutter to work it in until the mixture looks like coarse, pea sized crumbs. Work quickly so the butter stays cold, which is what gives the topping its crisp texture.
- Fold in the nuts, if using
If you are using chopped pecans or walnuts, fold them into the crumble mixture now so they are evenly distributed throughout the topping and toast nicely alongside the oats.
- Top the apples with the crumble
Sprinkle the oat crumble topping evenly over the apple filling, covering the surface completely. Do not press it down, since a loose, airy layer bakes up crisper than a tightly packed one.
- Bake until golden and bubbling
Place the dish in the preheated oven and bake for 40 to 45 minutes, until the topping is golden brown and the apple filling is bubbling around the edges. If the top browns too quickly, loosely tent it with foil for the last 10 minutes.
- Cool slightly before serving
Remove the crisp from the oven and let it rest for at least 10 to 15 minutes on a wire rack. This resting time allows the filling to thicken slightly so it holds together better when scooped.
- Serve warm
Scoop generous portions into bowls while the crisp is still warm, when the topping is at its crispiest and the filling is soft and fragrant. Add any toppings you like just before serving so they do not melt into the dish too quickly.
Substitutions and variations
- You can swap the all purpose flour in the topping for a 1 to 1 gluten free flour blend if you need this dessert to be gluten free.
- Coconut oil or plant based butter can replace the unsalted butter for a dairy free version that still crisps up nicely.
- Pears work beautifully in place of apples if you want a slightly softer, sweeter filling with a similar texture.
- If you do not have nutmeg on hand, a pinch of ground ginger or allspice will still give the filling a warm, spiced flavor.
- Quick oats can be used instead of old fashioned oats in a pinch, though the topping will be a little less chunky and crisp.
Chloe's tips
- Use a mix of tart and sweet apples, such as Granny Smith and Honeycrisp, for the best balance of flavor and texture in the filling.
- Keep the butter cold right up until you mix it into the topping, since warm butter will make the crumble greasy instead of crisp.
- If your apples release a lot of juice, add an extra teaspoon of flour to the filling to help it thicken properly during baking.
- Place a baking sheet on the rack below the crisp to catch any bubbling juices and keep your oven clean.
How to store it
- Store any leftover apple crisp covered in the refrigerator for up to 4 days.
- Reheat individual portions in the microwave for about 30 to 45 seconds, or warm the whole dish in a 325 degree Fahrenheit oven for about 15 minutes to bring back the crisp topping.
- Freeze cooled leftovers in an airtight container for up to 2 months, and thaw overnight in the refrigerator before reheating.
Serving suggestions
This apple crisp is delicious on its own, but a few simple additions can turn it into something extra special.
- A scoop of vanilla ice cream melting into the warm filling
- A drizzle of caramel sauce over the top
- A dollop of freshly whipped cream
- A light dusting of powdered sugar for a pretty finish
Frequently asked questions
Can I make apple crisp ahead of time?
Yes, you can assemble the filling and topping separately, cover them, and refrigerate for up to a day before baking. Combine them just before baking so the topping stays crisp.
What is the difference between apple crisp and apple crumble?
Apple crisp typically includes oats in the topping for added crunch, while apple crumble uses a topping made mostly of flour, sugar, and butter without oats.
Why is my apple crisp topping soggy?
A soggy topping usually happens when the butter was too warm when mixed in, or the crisp was covered while still hot. Let it cool uncovered and use cold butter for the crumble.
Do I need to peel the apples?
Peeling is recommended for a smoother, more tender filling, since apple skins can become tough and chewy after baking.
Can I double this recipe for a crowd?
Yes, this recipe doubles easily. Use a larger baking dish or two separate dishes, and add a few extra minutes to the baking time to make sure the filling is fully bubbling.
Let's get cooking!
This easy apple crisp with oat crumble is proof that a few simple ingredients can turn into something truly comforting. Whether you are baking it for a family dinner or just craving something warm and sweet, it is a recipe worth keeping close all season long.
