Few things say comfort like the aroma of Apple Crisp with Oat Topping baking in the oven. This timeless treat combines tart-sweet apples softened with a touch of spice and lemon juice, all tucked under a cozy, golden oat crumble that’s impossible to resist. Whether you’re making it to share at a holiday feast or just curling up with a warm bowl on a rainy evening, every bite promises sweet nostalgia. Vanilla ice cream or whipped cream on top? Perfection. This is a dessert that truly feels like a hug from the inside out.

Ingredients You’ll Need
Gathering the ingredients for Apple Crisp with Oat Topping is wonderfully straightforward — most are pantry staples, but each serves a special purpose to create the perfect balance of flavor, texture, and color. A mix of tart and sweet apples brings depth, while oats and brown sugar form that perfectly rugged topping we all love.
- Apples (6 cups, peeled, cored, and sliced): Granny Smith and Honeycrisp are fantastic for tartness, sweetness, and texture — you can mix and match based on what you have.
- Lemon juice (2 tbsp): Brightens the apple flavor and keeps them from browning while you prep.
- Granulated sugar (½ cup/100g): Adds sweetness and helps draw out the apples’ juices.
- All-purpose flour (2 tbsp for filling, ¾ cup/95g for topping): Thickens the apple juices and gives structure to the crumble.
- Ground cinnamon (1 tsp for filling, ½ tsp for topping): Warm, fragrant spice that gives the dessert classic fall flavor.
- Ground nutmeg (¼ tsp): Adds subtle warmth that pairs beautifully with apples.
- Old-fashioned rolled oats (1 cup/100g): The star of the topping, giving it chew and toasty crunch.
- Brown sugar (¾ cup/150g, packed): Brings depth and a hint of molasses to the crisp topping.
- Unsalted butter (½ cup/115g, cold and cubed): Essential for a rich, crumbly, golden topping — use it cold for best results.
- Pinch of salt: Balances sweetness in the topping and brings out all the delicious flavors.
How to Make Apple Crisp with Oat Topping
Step 1: Prep Your Oven and Baking Dish
Begin by preheating your oven to 350°F (175°C) — a crucial step for an evenly baked dessert. Lightly grease a 9×13-inch baking dish with butter or nonstick spray to prevent sticking and ensure you can scoop out every delicious bite.
Step 2: Make the Apple Filling
In a large mixing bowl, toss your freshly sliced apples with the lemon juice, granulated sugar, flour, cinnamon, and nutmeg. The lemon juice will keep your apples crisp and colorful while the sugar and spices meld everything into a cozy apple medley. Spread the apple mixture evenly into your prepared baking dish, making sure the layer is uniform for even baking.
Step 3: Prepare the Oat Topping
In a second bowl, combine the rolled oats, flour, brown sugar, cinnamon, and a pinch of salt. Next, add the cold, cubed butter and use a pastry cutter or a sturdy fork to cut it into the dry ingredients. The mixture should resemble coarse crumbs where some buttery pea-sized bits remain; these will melt into golden, crisp pockets as the dessert bakes.
Step 4: Assemble and Bake the Apple Crisp with Oat Topping
Evenly scatter the oat topping over the apples, covering them completely for that irresistible crunchy lid. Slide your dish into the center rack of the oven and bake for 40 to 45 minutes. You’ll know it’s ready when the apples are tender (test them with a fork) and the topping is beautifully golden brown.
Step 5: Cool Slightly and Serve Warm
Once baked, allow the apple crisp to cool for at least 10 to 15 minutes. This short rest helps the juices settle a bit so you get the perfect balance of saucy fruit and crumbly topping in every spoonful. Serve warm with your favorite toppings or enjoy as is.
How to Serve Apple Crisp with Oat Topping

Garnishes
Take your Apple Crisp with Oat Topping from delicious to downright dreamy with a scoop of vanilla ice cream that melts luxuriously into every nook. A swirl of caramel sauce, a cloud of homemade whipped cream, or a sprinkle of toasted nuts adds flavor and flair — simple touches that impress both guests and your tastebuds.
Side Dishes
Apple crisp is undeniably a star on its own, but it also shines as part of a dessert spread. A hot cup of coffee or chai tea contrasts beautifully with the sweet warmth of the crisp, or serve alongside tangy Greek yogurt for a slightly lighter twist that still feels indulgent.
Creative Ways to Present
For playful flair, portion your Apple Crisp with Oat Topping into individual ramekins before baking for single-serve treats. Or, serve it family-style but dress each bowl with a different topping — vanilla gelato, maple whipped cream, or a dash of sea salt — letting everyone customize their own dessert adventure. It’s a feast for the eyes and the palate.
Make Ahead and Storage
Storing Leftovers
Apple Crisp with Oat Topping is just as delicious the next day — simply cover your baking dish tightly and refrigerate for up to four days. The flavors will meld even more, making every bite richer and more comforting with time.
Freezing
If you’d like to make this crisp ahead or save leftovers for another week, let it cool completely, wrap it tightly (or transfer to an airtight container), and freeze for up to three months. When ready to enjoy, thaw overnight in the fridge or bake straight from frozen, adding extra time as needed for a piping hot result.
Reheating
To reheat, simply pop a serving (or the entire dish) in a 350°F (175°C) oven until warmed through and crisp on top — about 15 minutes for individual portions. For a quick fix, the microwave works too, though you’ll lose a bit of the topping’s crunch.
FAQs
Can I use other types of apples?
Absolutely! While Granny Smith and Honeycrisp give a perfect tart-sweet balance, you can mix in or substitute with Fuji, Braeburn, or Pink Lady apples based on your preference or what’s in season.
Is it possible to make Apple Crisp with Oat Topping gluten-free?
Yes, simply swap the all-purpose flour for your favorite gluten-free blend in both the filling and topping — just make sure your oats are certified gluten-free as well!
How do I make the topping extra crunchy?
For added crunch, fold in ½ cup of chopped pecans or walnuts to your oat topping, or sprinkle raw turbinado sugar over the top before baking for a sweet, crackly finish.
Can I prepare Apple Crisp with Oat Topping ahead of time?
Definitely! You can assemble everything up to a day in advance (keep the topping separate until ready to bake for maximum crunch), then refrigerate until you’re ready to pop it in the oven.
What’s the best way to serve leftovers?
Warm your leftovers in the oven or microwave and top with a scoop of ice cream or yogurt for a delicious twist — the flavors deepen overnight, so it might taste even better the next day!
Final Thoughts
There’s something so special about baking up a big dish of Apple Crisp with Oat Topping and sharing it with those you love — or simply treating yourself. No matter the season or the occasion, one bite and you’ll savor its cozy, comforting charm. Give it a try and make it your own; you’ll want to come back to this recipe again and again!
Print
Apple Crisp with Oat Topping Recipe
- Total Time: 1 hour 5 minutes
- Yield: 8 servings
- Diet: Vegetarian
Description
A warm, comforting apple dessert with tender, spiced apples baked under a golden, buttery oat crumble. Perfect with a scoop of vanilla ice cream or a dollop of whipped cream.
Ingredients
For the Apple Filling:
- 6 cups apples, peeled, cored, and sliced (Granny Smith + Honeycrisp work well)
- 2 tbsp lemon juice
- ½ cup (100 g) granulated sugar
- 2 tbsp all-purpose flour
- 1 tsp ground cinnamon
- ¼ tsp ground nutmeg
For the Oat Topping:
- 1 cup (100 g) old-fashioned rolled oats
- ¾ cup (95 g) all-purpose flour
- ¾ cup (150 g) brown sugar, packed
- ½ cup (115 g) unsalted butter, cold and cubed
- ½ tsp ground cinnamon
- Pinch of salt
Instructions
- Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish.
- In another bowl, mix oats, flour, brown sugar, cinnamon, and salt. Cut in butter with a pastry cutter or fork until mixture resembles coarse crumbs.
- Sprinkle oat topping evenly over apples.
- Bake for 40–45 minutes, until apples are tender and topping is golden brown.
- Cool slightly before serving warm.
In a large bowl, toss apple slices with lemon juice, sugar, flour, cinnamon, and nutmeg. Spread evenly into the prepared baking dish.
Notes
- Serve with vanilla ice cream, caramel sauce, or whipped cream.
- Add ½ cup chopped pecans or walnuts to the topping for extra crunch.
- Mix in cranberries or pears with the apples for variation.
- Leftovers keep covered in the fridge for up to 4 days; reheat before serving.
- Prep Time: 20 minutes
- Cook Time: 45 minutes
- Category: Dessert, Crisp
- Method: Baking
- Cuisine: American