Apple Crisp with Oat Streusel
Apple Crisp with Oat Streusel is a classic dessert that feels like a warm hug on a chilly day. It’s made with tender, cinnamon-spiced apples bubbling under a crunchy topping…
Tip: save now, cook later.Apple Crisp with Oat Streusel is a classic dessert that feels like a warm hug on a chilly day. It’s made with tender, cinnamon-spiced apples bubbling under a crunchy topping of oats, brown sugar, and butter. The streusel adds just the right amount of crispness that pairs perfectly with soft, juicy apples.
I love making this dish whenever I want something simple but comforting. The oat streusel gives it a nice texture that’s better than plain crumble, and it’s super easy to whip up with just a few pantry staples. I usually find myself sneaking spoonfuls while it’s still warm, which I think should always be encouraged!
My favorite way to serve this is warm out of the oven with a big scoop of vanilla ice cream melting on top. It’s the perfect balance of warm and cold, sweet and slightly tart. Whether you’re making it for a family dinner or just a cozy treat for yourself, this apple crisp always feels like a little celebration in every bite.
Key Ingredients & Substitutions
Apples: I like using Granny Smith or Honeycrisp because they hold their shape well and offer a balance of tart and sweet. Fuji or Braeburn also work nicely if you prefer a sweeter note.
Lemon Juice: This keeps the apples from browning and adds a fresh zing. If you don’t have lemon, a splash of apple cider vinegar can work too.
Oats: Old-fashioned rolled oats give the topping a great chewy texture. Quick oats can be used but the topping will be less crunchy.
Butter: Using unsalted butter lets you control the saltiness. If you want a dairy-free version, melted coconut oil is a good swap.
How Do You Get the Perfect Crunchy Oat Streusel Topping?
The key is mixing the dry ingredients with melted butter just right. You want the oats and sugar to stick together but still be crumbly.
- Combine oats, flour, sugar, cinnamon, and salt well first.
- Slowly add melted butter while stirring to coat everything evenly.
- The mixture should clump a bit but not become a paste.
- Spread it evenly over the apples for even browning.
- Bake until golden brown with some crispy bits on top—about 40-45 minutes.
This technique makes the topping contrast perfectly with tender baked apples for a satisfying bite every time.
Equipment You’ll Need
- 9×13-inch baking dish – perfect size for spreading apples and topping evenly for consistent baking.
- Mixing bowls – you’ll need one for the apples and one for the oat streusel to keep things organized.
- Measuring cups and spoons – for accurate amounts of sugar, spices, and butter.
- Wooden spoon or spatula – great for mixing apples and stirring the streusel without mashing the fruit.
- Knife and cutting board – to peel, core, and slice the apples cleanly.
Flavor Variations & Add-Ins
- Mix in chopped nuts like walnuts or pecans to the streusel for extra crunch and a nutty flavor.
- Add a teaspoon of ground ginger or cardamom for a warm spice twist that pairs well with cinnamon.
- Stir in frozen berries or fresh pears with the apples for a different fruity combo and color.
- Try replacing half the oats with granola for a chunkier, more textured topping.
How to Make Apple Crisp with Oat Streusel
Ingredients You’ll Need:
For the Apples:
- 6 cups peeled, cored, and sliced apples (such as Granny Smith or Honeycrisp)
- 1 tablespoon lemon juice
- ½ cup granulated sugar
- 1 teaspoon ground cinnamon
- ¼ teaspoon ground nutmeg
- ¼ teaspoon salt
For the Oat Streusel Topping:
- 1 cup old-fashioned rolled oats
- ¾ cup all-purpose flour
- ⅔ cup packed brown sugar
- ½ teaspoon ground cinnamon
- ¼ teaspoon salt
- ½ cup unsalted butter, melted
Time You’ll Need
This recipe takes about 15 minutes to prepare and about 40-45 minutes to bake. Plan on around 1 hour total from start to finish.
Step-by-Step Instructions:
1. Prepare the Apples:
Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish. In a large bowl, toss the sliced apples with lemon juice to keep them from browning. Then add granulated sugar, cinnamon, nutmeg, and salt. Stir everything together so the apples are evenly coated.
2. Make the Oat Streusel:
In a separate bowl, mix the rolled oats, flour, brown sugar, cinnamon, and salt. Pour in the melted butter and stir until the mixture looks crumbly and all the ingredients are evenly moistened.
3. Assemble and Bake:
Spread the apple mixture evenly in the prepared baking dish. Sprinkle the oat streusel topping evenly over the apples. Bake for 40 to 45 minutes, until the topping is golden brown and the apples are tender and bubbling. Let it cool for a little bit before serving.
Serve your apple crisp warm, with a scoop of vanilla ice cream or a dollop of whipped cream if you like. Enjoy your cozy, crunchy, and sweet dessert!
Can I Use Frozen Apples for This Apple Crisp?
Yes, you can use frozen apples! Just make sure to thaw them completely and drain any excess liquid before mixing with the sugar and spices to avoid a soggy topping.
How Should I Store Leftovers?
Store leftover apple crisp in an airtight container in the refrigerator for up to 3 days. Reheat in the oven at 300°F (150°C) until warm and crisp again, or microwave individual servings for a quicker option.
Can I Substitute the Butter in the Streusel?
Absolutely! Melted coconut oil or a dairy-free margarine works well as a substitute for unsalted butter to make this recipe dairy-free. Just keep the same amount and mix it in as instructed.
Is It Possible to Make This Recipe Ahead of Time?
Yes! You can assemble the apple filling and streusel topping separately the day before. Store both covered in the fridge, then combine and bake fresh when you’re ready to serve.
