Cinnamon Apple Crumb Cake

Warm, soft, and irresistibly cozy, Cinnamon Apple Crumb Cake is the kind of bake that instantly feels like home. Not only does it feature tender vanilla cake layers, but it also layers in juicy cinnamon apples and a buttery crumb topping. As a result, every bite is rich, soft, and perfectly balanced.

Interestingly, apple cakes have been a staple in American baking since early colonial times, especially during fall harvests. However, this version elevates the classic by combining a bakery-style crumb topping with a moist, fluffy base. Meanwhile, the cinnamon swirl melts right into the cake, creating a bakery-quality texture without complicated steps.

Whether you’re serving it for brunch, dessert, or a cozy afternoon treat, this cake delivers both comfort and elegance. Plus, since it’s simple and reliable, it’s perfect for home bakers of all levels.

Recipe Yield: 9 servings

INGREDIENTS

2 cups all-purpose flour
1 tsp baking powder
1/2 tsp baking soda
1/2 tsp salt
1/2 cup unsalted butter, softened
3/4 cup granulated sugar
2 large eggs, room temperature
1 tsp vanilla extract
1/2 cup sour cream, room temperature
1/4 cup milk

Apple Layer
2 medium apples, peeled and diced small (about 2 cups)
2 tbsp brown sugar
1 tsp cinnamon
1 tsp lemon juice
1 tsp cornstarch
1/4 tsp ground nutmeg

Cinnamon Swirl
1/3 cup brown sugar
1 1/2 tsp cinnamon

Crumb Topping
1/2 cup all-purpose flour
1/3 cup brown sugar
1/4 cup unsalted butter, melted and slightly cooled
1/2 tsp cinnamon
2 tbsp rolled oats
Pinch of salt

Glaze
1/2 cup powdered sugar
1–2 tbsp water
1/4 tsp vanilla extract
How to use: Whisk until smooth and pourable. Start with 1 tbsp water, then add more gradually until you reach a soft drizzle consistency.

INSTRUCTIONS

1. Preheat and prepare:
Preheat oven to 350°F (175°C). Line an 8×8-inch pan with parchment paper, leaving overhang for easy removal.

2. Prepare the apples:
In a bowl, combine apples, brown sugar, cinnamon, lemon juice, cornstarch, and nutmeg. Toss well, then let sit 5–10 minutes so juices slightly thicken.

3. Mix dry ingredients:
In a separate bowl, whisk flour, baking powder, baking soda, and salt until evenly combined.

4. Cream butter and sugar:
Beat butter and sugar for 2–3 minutes until light and fluffy.

5. Build the batter:
Add eggs one at a time, mixing well after each. Then add vanilla. Next, alternate dry ingredients with sour cream and milk, mixing gently just until combined. Do not overmix.

6. Layer the cake:
Spread half the batter evenly into the pan. Sprinkle cinnamon swirl mixture. Add apples evenly, leaving excess liquid behind. Then carefully spread remaining batter over top.

7. Make crumb topping:
Combine flour, brown sugar, cinnamon, oats, salt, and melted butter. Use fingers to form bakery-style crumble.

8. Bake to perfection:
Bake 42–50 minutes, until a toothpick inserted in the center comes out clean or internal temperature reaches 195–200°F. If browning too quickly, loosely tent with foil during the last 10 minutes.

9. Cool and glaze:
Cool for 20–30 minutes, then drizzle glaze over slightly warm cake for the best finish.

Helpful Tips to Perfect This Recipe

• Use the Right Apples: Choose firm apples like Honeycrisp or Granny Smith. They hold their shape better, so the cake stays structured and not mushy.
• Don’t Overmix the Batter: Once you combine wet and dry ingredients, mix gently. Otherwise, the cake can turn dense instead of light and fluffy.
• Let It Cool Slightly Before Cutting: Although it’s tempting, letting the cake rest helps the layers set properly. As a result, you’ll get clean slices and better texture.