I can never decide if I want apple crumble or apple cake when I’m baking, so eventually I just stopped choosing.
This recipe is both at once, and it’s better for it. 🍎
Apple crumble cake is a soft, buttery cake base topped with cinnamon-spiced apples and a crunchy oat crumble topping, basically combining two desserts into one pan.
It’s got the soft cake texture you want from a cake, plus that crisp, buttery crumble you’d expect from a classic crumble.
And it bakes in one pan, no layering or fancy assembly required.
Here’s something worth knowing: the difference between a “crumble” and a “crisp” mostly comes down to oats, crumbles traditionally skip them in favor of a flour-and-butter topping, while crisps almost always include them. 🍂
This recipe leans crisp-style with its crumble, since the oats are really what give it that extra crunch and texture people love.
Why This Recipe Works
A soft, simple cake base gives this dessert its structure, while staying light enough that it doesn’t compete with the apples and crumble on top.
Tossing the apples in cinnamon and a little sugar before baking draws out their natural juices, which seep slightly into the cake as it bakes, keeping everything moist.
The oat crumble topping is what really sets this apart from a standard apple cake. The oats add a heartier, more textured crunch than a typical streusel, closer to what you’d get from a real crumble.
Baking everything together in one pan means the flavors and textures all meld into each other slightly while still staying distinct, soft cake, juicy apples, and crisp topping, all in one bite.
What You’ll Need
For the cake:
- 1 ½ cups all-purpose flour
- 1 tsp baking powder
- ½ tsp salt
- ½ cup unsalted butter, softened
- ¾ cup granulated sugar
- 2 large eggs
- ½ cup milk
- 1 tsp vanilla extract
For the apple layer:
- 3 cups diced apples (about 3 medium apples)
- 2 tbsp granulated sugar
- 1 tsp ground cinnamon
For the crumble topping:
- ¾ cup all-purpose flour
- ½ cup old-fashioned oats
- ½ cup brown sugar
- ½ tsp ground cinnamon
- ½ cup unsalted butter, cold and cubed
That’s the full list across all three layers, and most of it is basic baking staples.
Tools You’ll Need
- 9×13 baking pan or springform pan
- Large mixing bowl
- Hand mixer or stand mixer
- Whisk
- Small bowl for the crumble
How to Make Apple Crumble Cake
Step 1: Prep your pan and apples
Preheat your oven to 350°F and grease your baking pan well.
Toss the diced apples with the sugar and cinnamon in a small bowl. Set aside.
Step 2: Make the crumble topping
In a separate bowl, combine the flour, oats, brown sugar, and cinnamon for the crumble.
Add the cold, cubed butter and work it into the dry ingredients with your fingers or a fork until it forms coarse, crumbly clumps. Set aside.
Step 3: Make the cake batter
Cream the butter and granulated sugar together until light and fluffy.
Add the eggs one at a time, mixing well after each addition.
Stir in the milk and vanilla extract.
In a separate bowl, whisk together the flour, baking powder, and salt.
Gradually add the dry ingredients into the wet ingredients, mixing just until combined.
The batter will be thicker than a typical cake batter, since it needs to support the weight of the apples and crumble on top.
Step 4: Assemble the cake
Spread the cake batter evenly into your prepared pan.
Arrange the cinnamon-sugar apples evenly over the top of the batter.
Sprinkle the crumble topping generously over the apples, covering as much of the surface as possible.
Press the crumble down gently so it adheres slightly to the apples underneath, which helps it stay in place once baked and sliced.
Step 5: Bake
Bake for 45-55 minutes, or until the top is golden and a toothpick inserted into the cake portion comes out clean.
Let the cake cool in the pan for at least 20 minutes before slicing.
Pro Tips
A handful of small details that genuinely improve this cake.
- Use cold butter for the crumble. Cold butter creates that classic crumbly, crunchy texture, while softened butter turns it into more of a paste.
- Dice your apples small and even. Large chunks won’t bake through evenly and can make slicing the cake messier.
- Use a firmer apple variety. Honeycrisp or Granny Smith hold their shape better during baking than softer varieties.
- Don’t skip the cooling time. The cake needs time to set, especially with the juicy apple layer in the middle.
- Cover loosely with foil if the topping browns too quickly. This protects the crumble while letting the cake finish baking through.
- Let the apples sit in the cinnamon-sugar for a few minutes before assembling. This gives them a head start on releasing their juices, which helps the flavor distribute more evenly.
Substitutions and Variations
- Want it nuttier? Add ½ cup chopped walnuts or pecans to the crumble topping.
- No oats on hand? Skip them for more of a classic streusel topping instead of a true crumble texture.
- Want a caramel drizzle? Add a simple caramel sauce over the top once the cake has cooled slightly.
- No fresh apples available? Canned apple pie filling works in a pinch, though the texture and flavor will be a little different.
- Want it dairy-free? Use a plant-based butter and milk substitute throughout, both work well in this recipe.
Make Ahead Tips
This cake actually holds up well a day or two after baking, with the flavors settling in nicely.
Bake it ahead and store it covered at room temperature, then serve as is or warm slightly before serving.
The crumble topping can also be made up to 2 days ahead and stored separately in the fridge until you’re ready to assemble and bake.
Nutritional Info & Diet Swaps
One slice (this recipe makes about 12 slices) comes out to roughly 320 calories, depending on the exact size of the slice and amount of crumble.
For a lighter version: Reduce the sugar slightly in both the cake and crumble layers.
For a lower sugar version: Cut back on the brown sugar in the crumble and rely more on the natural sweetness of the apples.
Meal Pairing Suggestions
- Vanilla ice cream: Turns this into more of a dessert centerpiece for a dinner party.
- Coffee or chai: The warm spices pair naturally with both for a cozy afternoon treat.
- A dollop of whipped cream: A simple way to dress it up without much extra effort.
- A warm mug of cider: A cozy addition during the fall and winter months.
Time-Saving Tips
- Use a food processor to quickly dice the apples instead of cutting them by hand.
- Make the crumble topping ahead of time and store it in the fridge until you’re ready to bake.
- Mix the dry ingredients ahead of time and store them in a container until you’re ready to bake.
Leftovers and Storage
Store the cake covered at room temperature for up to 3 days, or in the fridge for up to a week.
It also freezes well for up to 3 months. Wrap it tightly before freezing to help keep the crumble topping intact.
Thaw at room temperature for a few hours before serving, or warm individual slices in the microwave.
FAQ
Do I need to peel the apples first? It’s optional. The skin softens during baking, though some people prefer the smoother texture of peeled apples in this particular cake.
Why did my crumble topping melt into the cake instead of staying crisp? This usually means the butter in the crumble was too soft when it was added. Keeping it cold helps it hold its shape and stay crunchy on top.
Can I make this cake in a springform pan instead? Yes, just make sure to grease it well and consider placing it on a baking sheet in case any juices leak out during baking.
Can I add a glaze on top of the crumble? Yes, a light drizzle of powdered sugar glaze or caramel sauce works well even with the crumble still in place.
How do I know which apples are best for baking? Firmer varieties like Honeycrisp, Granny Smith, or Braeburn hold their shape and texture best once baked.
Can I make this cake ahead for a holiday dessert table? Yes, it holds up well baked a day or two in advance, and the flavor actually improves slightly as it sits.
Wrapping Up
This cake solved the problem of never being able to choose between crumble and cake, since now I genuinely don’t have to.
A soft cake base, a layer of cinnamon apples, and a crunchy oat crumble on top. That’s genuinely the whole process.
Make this one for a weekend baking project, a holiday dessert table, or just because your kitchen could use that warm cinnamon smell.
If you try this one, leave a comment below and let me know how it turned out, or which apple variety you used. I’d love to hear about it.
AI Image Generator Prompt:
Create a 9:16 vertical image showing all of the ingredients and tools needed for this apple crumble cake recipe laid out on a white marble countertop with hints of gold veining. Include: a bowl of all-purpose flour, a small dish of baking powder, a small dish of salt, a stick of softened butter, a bowl of granulated sugar, two eggs, a small pitcher of milk, a small bottle of vanilla extract, three whole apples with some diced, a small dish of ground cinnamon, a bowl of old-fashioned oats, a bowl of brown sugar, a small dish of cold cubed butter for the crumble, a large mixing bowl, a whisk, a hand mixer, and a 9×13 baking pan. Use soft natural lighting coming in from one side, shot in the popular top-down flat lay style food bloggers use, captured as if taken with an iPhone 15 Pro, with warm and inviting tones throughout.
