Easy Baked Apple Crumble with Oats & Cinnamon

Close-up of baked apple crumble showing golden oat topping and tender cinnamon apples with glossy syrup in a white baking dish.

Easy Baked Apple Crumble with Oats & Cinnamon

This Baked Apple Crumble is a cozy, homemade dessert made with tender cinnamon apples and a buttery oat topping. It’s easy, family-friendly, and perfect for making sweet kitchen memories with your little helpers.

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Course: Dessert

Cuisine: American

Keyword: Baked Apple Crumble, baked apple crumble easy, baked apple crumble oats, easy apple dessert, oven baked apple cinnamon crumble

Prep Time: 20

Cook Time: 40

Total Time: 1

Servings: servings

Calories: 360kcal

Cost: $9–$11

Equipment

1 9×13-inch baking dish Lightly greased
2 Mixing bowls One for apples, one for topping
1 Measuring cup set For dry and wet ingredients
1 Measuring spoon set For spices
1 Wooden spoon or fork For mixing topping
1 Apple peeler & knife Adult supervision for kids

Ingredients

For the Apple Filling

6–7 medium Baking apples Granny Smith, Honeycrisp, or Pink Lady
¼ cup Granulated sugar
2 tablespoon All-purpose flour
1 teaspoon Ground cinnamon
¼ teaspoon Ground nutmeg
1 tablespoon Fresh lemon juice
½ teaspoon Vanilla extract

For the Crumble Topping

1 cup Rolled oats Old-fashioned
1 cup All-purpose flour
¾ cup Light brown sugar Packed
½ teaspoon Ground cinnamon
¼ teaspoon Salt
½ cup Unsalted butter Melted

Instructions

Preheat your oven to 375°F (190°C). I always let my little Olivia help press the oven buttons, she takes her job very seriously. Grease your baking dish while it warms.
In a big bowl, gently toss the sliced [apples], [sugar], [flour], [cinnamon], [nutmeg], [lemon juice], and [vanilla]. Olivia loves stirring while sneaking apple slices, just part of the process around here.
Spread the apples evenly into your prepared baking dish. I let Olivia smooth the top with a spoon, it may not be perfect, but that’s part of the magic.
In another bowl, mix [oats], [flour], [brown sugar], [cinnamon], and [salt]. Pour in the [butter] and stir until crumbly. Olivia calls this “making dessert sand.”
Sprinkle the crumble over the apples. Don’t press it down, loose and crumbly is exactly what we want.
Bake uncovered for 40–45 minutes, until golden brown and bubbling around the edges. The house will smell like cinnamon heaven.
Let cool for 10 minutes before serving. We always top ours with vanilla ice cream and enjoy it curled up on the couch together.

Notes

For a gluten-free baked apple crumble, use gluten-free flour and certified GF oats.
Store leftovers covered in the fridge for up to 4 days.
Reheat in the oven at 350°F for the crispiest topping.
You can make this baked apple crumble without oats by replacing oats with extra flour.
This is my daughter’s favorite “helping recipe”, simple, forgiving, and full of sweet memories.

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