Easy Apple Crisp (with Blueberries)

This easy apple crisp combines tender cinnamon-spiced apples and juicy blueberries beneath a thick, buttery apple crisp topping made with oats and brown sugar. I give the fruit a 10-minute head start in the oven before adding the crumble, which helps the apples become tender while keeping that topping beautifully golden and crisp.

Serve this apple blueberry crisp warm with a scoop of vanilla ice cream and you have exactly the kind of simple, cozy dessert I want to make from late summer straight through fall.

A Little About This Crisp Recipe

There is always that point near the end of summer when my kitchen can’t quite decide which season it’s in.

Blueberries are still around, but suddenly the apples are looking beautiful too. I’m not ready to let summer go, but I’m absolutely ready for cinnamon, brown sugar, and something warm from the oven.

This apple and blueberry crisp is my answer to that little seasonal overlap.

I’ve always loved a traditional apple crisp, but adding blueberries changes it in the best way. They become juicy and almost jammy as they bake, filling in all the spaces between the apple slices and turning the fruit mixture a gorgeous deep purple.

And then there is the topping. For me, a crisp needs plenty of it. I want buttery clusters, toasted oats, caramel-like brown sugar, and enough crunch to get a little in every spoonful.

It’s a very simple dessert, but that’s exactly why I love it. Good fruit, a straightforward technique, and an ordinary baking dish can give you something that feels completely worthy of company.

Why I Love This Apple Crisp Recipe

• The best of two seasons: This apple crisp recipe combines tender apples with juicy blueberries for an easy apple blueberry crisp that works from late summer into fall.
• Warm, balanced flavor: Lemon juice brightens the fruit mixture, while vanilla, cinnamon, nutmeg, ginger, and cloves add cozy spice without overpowering the apples.
• Better texture: I bake the fruit for 10 minutes before adding the apple crisp topping, which gives the apples a head start and helps the filling become tender and juicy.
• Golden, buttery topping: The cold-butter oat crumble bakes for another 30–35 minutes until crisp and deeply golden.
• Simple technique, better result: It’s one small extra step that gives this easy apple crisp a more balanced fruit-to-topping texture.

Ingredients You’ll Need

There are two parts to this apple blueberry crisp recipe: the fruit filling and the buttery oat topping.

For the Apple Blueberry Filling

4 cups sliced apples, about 2 large apples
Use firm baking apples that won’t immediately turn to applesauce in the oven.

I love a tart apple such as Granny Smith, but Honeycrisp, Pink Lady, Braeburn, or Fuji are also good choices. Better yet, combine a tart apple with a sweeter variety for more depth of flavor. Slice the apples fairly evenly so they finish cooking at the same time.

2 cups blueberries
Fresh blueberries are wonderful when they’re in season. Look for berries that are plump, firm, and dry rather than soft or wrinkled. The blueberries provide a sweet-tart contrast to the apples and create that gorgeous purple fruit filling as they bake.

1 tablespoon lemon juice
Fresh lemon juice brightens the fruit and balances the sugars. I find it particularly important when using very sweet apples.

1 tablespoon vanilla extract
A generous splash of vanilla brings the apples, blueberries, and warm spices together. It’s subtle, but the finished apple crisp dessert tastes much more rounded with it.

¼ cup brown sugar
Brown sugar gives the filling a deeper, almost caramel-like sweetness.

¼ cup granulated sugar
Using both granulated and brown sugar gives me the balance I want: clean sweetness from the granulated sugar and richer flavor from the brown.

2 tablespoons cornstarch
This is especially important when you’re making a fruit crisp with blueberries. As the berries bake, they release quite a bit of juice. Cornstarch thickens those juices so the finished filling is glossy and spoonable rather than watery.

½ teaspoon cinnamon
Cinnamon is the main spice in the filling and the flavor I want people to notice first.

¼ teaspoon ground nutmeg
Nutmeg adds warmth without taking over.

¼ teaspoon ground ginger
Ginger gives the fruit a gentle background spice and works especially well with blueberries.

⅛ teaspoon ground cloves
Cloves are powerful, so a little is plenty. I love what they bring here, but I keep the amount restrained so this still tastes like an apple-and-blueberry dessert rather than a spice cake.

For the Apple Crisp Topping

1½ cups oats
Oats give an apple crisp using oats its signature chewy-crisp texture. I prefer old-fashioned rolled oats because they maintain more texture after baking.

¾ cup all-purpose flour
The flour gives the topping structure and helps create those buttery crumble clusters.

¾ cup brown sugar
Brown sugar makes the crisp topping caramelize beautifully and gives it more flavor than granulated sugar alone.

½ teaspoon salt
Salt balances all that sweetness and makes the butter and spices taste more pronounced.

½ teaspoon cinnamon
A little cinnamon in both the fruit and topping carries the flavor through the entire dessert.

¾ cup cold butter, cubed
Cold butter is important here. Rather than melting completely into the dry ingredients before the crisp has a chance to bake, small pieces of cold butter create irregular clusters and craggy crumbs.

You can use unsalted or salted butter. If using salted butter, you may want to reduce the additional salt slightly.

Substitutions and Variations

One reason I love fruit crisp is how forgiving it is.

Make a Classic Apple Crisp

For a traditional easy apple crisp, leave out the blueberries and replace them with additional sliced apples. You’ll need roughly 6 cups of prepared fruit total. The method stays essentially the same.

Use Frozen Blueberries

You can make blueberry apple crisp with frozen blueberries. I recommend adding the berries while still frozen rather than thawing them into a puddle of juice first.

The filling may need a few additional minutes to become hot and bubbly.

Use Different Berries

Blackberries, raspberries, or a mixture of berries can replace some or all of the blueberries. That’s an easy way to turn this into an apple berry crisp using whatever is in season.

Add Nuts to the Topping

Add ½ cup chopped pecans or walnuts to the oat mixture for additional crunch.

Add Orange Zest

For a slightly different citrus note, add finely grated orange zest to the fruit. Orange is especially nice with the cinnamon, cloves, and blueberries.

Make It Gluten-Free

Use a good 1:1 gluten-free baking flour in place of the all-purpose flour and make sure your oats are certified gluten-free if needed.

Use Less Spice

If you prefer a more traditional apple crisp recipe, keep the cinnamon and leave out the ginger and cloves.

Make Individual Apple Crisps

Divide the fruit and topping among small oven-safe ramekins. The baking time will be shorter, so begin checking them earlier.

How to Make Apple Blueberry Crisp

1. Preheat the Oven

Preheat the oven to 350°F. Lightly butter or grease a medium baking dish. An 8- or 9-inch square dish works well for this amount of fruit.

2. Make the Fruit Filling

Add the sliced apples and blueberries to a large bowl.

Add the lemon juice, vanilla, brown sugar, granulated sugar, cornstarch, cinnamon, nutmeg, ginger, and cloves.

Stir together gently until the apples and blueberries are evenly coated. Transfer the mixture to the prepared baking dish and spread it into an even layer.

3. Give the Fruit a Head Start

Bake the uncovered apple and blueberry mixture for 10 minutes at 350°F.

This is the little step that makes this recipe different. I want the apples to begin softening and the blueberries to start releasing their juices before I add the topping.

4. Make the Crisp Topping

While the fruit begins baking, make the crumble.

In a large bowl, stir together the oats, flour, brown sugar, salt, and cinnamon. Add the cold cubed butter. Using a pastry cutter, fork, or your fingertips, work the butter into the dry ingredients until you have a crumbly mixture with a combination of smaller crumbs and larger clusters.

Don’t turn it into a uniform dough, those irregular pieces are what give you a great apple crisp topping.

5. Add the Topping

Carefully remove the baking dish from the oven after the initial 10 minutes. Scatter the oat mixture evenly over the hot fruit.

I don’t press it down firmly. Leaving the topping loose gives the heat somewhere to circulate and helps create more crisp edges.

6. Bake Until Golden

Return the baking dish to the oven. Bake for another 30 to 35 minutes, until the topping is deeply golden and you can see the fruit bubbling around the edges.

Those bubbles matter. They tell me the cornstarch has had enough heat to thicken the fruit juices.

7. Let It Rest

Remove the crisp from the oven and let it rest for at least 15 to 20 minutes before serving.

It’s going to smell incredible, and waiting isn’t particularly fun, but it makes a noticeable difference. Fresh from the oven, the filling is extremely hot and quite loose. As it sits, those juices thicken into a much more luscious fruit filling.

8. Serve Warm

I think this dessert is at its best when you serve warm with a scoop of vanilla ice cream. That contrast between warm fruit, buttery oat topping, and cold vanilla ice cream is difficult to improve upon.

How to Store Leftover Apple Crisp

• Let the apple crisp cool before covering.
• Store covered in the refrigerator for up to 4 days.
• Reheat at 350°F to help restore the crisp oat topping.
• For a single serving, the microwave works well, although the topping will be softer.

How to Make Apple Blueberry Crisp Ahead

• Make the crisp topping 1–2 days ahead and keep it covered in the refrigerator.
• For the best texture, prepare and bake the fruit mixture closer to serving time.
• You can also bake the entire apple blueberry crisp ahead, refrigerate it, and reheat at 350°F before serving.
• If I’m entertaining, I like to prep everything ahead and bake it close to dessert so it’s warm and crisp when served.

Frequently Asked Questions

• What are the best apples for apple crisp?
  Firm baking apples such as Granny Smith, Honeycrisp, Pink Lady, Braeburn, or Fuji work best. I like mixing one tart and one sweet variety.
• Do you peel apples for apple crisp?
  You can make apple crisp either way, but I prefer peeled apples for a softer, more cohesive filling.
• Can I make this without blueberries?
  Yes. Replace the blueberries with more sliced apples for a classic apple crisp dessert.
• Can I use frozen blueberries?
  Yes. For blueberry apple crisp with frozen blueberries, add them straight from frozen. You may need a few extra minutes of baking time.
• Why do you bake the fruit before adding the topping?
  The 10-minute head start helps the apples and blueberries soften and release their juices before the crisp topping goes on.
• Why is my apple crisp watery?
  Make sure the fruit is bubbling before removing it from the oven, and let the crisp rest 15–20 minutes so the cornstarch can fully thicken the juices.
• Why isn’t my apple crisp topping crispy?
  Start with cold butter, don’t overwork the topping, and bake until deeply golden. Reheat leftovers uncovered in the oven to restore some crunch.
• What’s the difference between apple crisp and apple crumble?
  In many recipes, a crisp contains oats while a crumble uses more of a flour-and-butter streusel. This is an apple crisp using oats.
• What should I serve with apple blueberry crisp?
  Vanilla ice cream is my favorite, but whipped cream, crème fraîche, or Greek yogurt are also delicious.
• Can I serve apple crisp cold?
  Yes, although I prefer to serve warm so the fruit is soft and fragrant and the topping contrasts with cold ice cream.
• Can I reduce the sugar?
  You can slightly reduce the sugar in the fruit filling if your apples and blueberries are very sweet. I’d reduce the brown sugar in the topping more cautiously because it also helps with browning and crispness.

Final Thoughts

There is a reason apple crisp recipes have been around for generations. They’re wonderfully forgiving.

You don’t have to roll pastry. You don’t need a mixer. You don’t have to make the fruit look perfect. You simply take good apples, toss them with a few thoughtfully chosen ingredients, cover them with a buttery oat crumble, and bake until your kitchen smells like fall.

Adding blueberries makes this version even more special. They bring a little taste of late summer into a classic easy apple crisp, while cinnamon, nutmeg, ginger, cloves, brown sugar, and vanilla pull everything toward fall.

For me, that’s the beauty of this apple and blueberry crisp recipe: two seasons meeting in one very simple baking dish. And if there’s vanilla ice cream in the freezer, even better.

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