Apple Crumb Cake is a soft, moist cake filled with juicy apples and topped with an extra brown sugar cinnamon crumb topping. This perfect fall dessert holds a special place in my cookbook!
Preheat the oven to 350°F (175°C). Line a 9x9-inch baking pan with parchment paper.
TO MAKE THE CRUMB TOPPING:
Combine the brown sugar, granulated sugar, cinnamon, and salt in a medium bowl. Stir in the melted butter, then mix in flour until crumbs form, using a fork . Do not overmix. Set aside.
TO MAKE THE CAKE BATTER:
Combine the flour, baking powder, baking soda, and salt in a mixing bowl.
In a larger bowl, beat the butter, brown sugar, and granulated sugar - starting on low speed, then increasing to high - until smooth and creamy, about 3 minutes. Scrape down the sides of the bowl with a rubber spatula.
Add the egg and vanilla and beat until combined. Stir in the sour cream until smooth, scraping the sides of the bowl if necessary.
Add half of the flour mixture and mix on low speed, then add the remaining flour and mix until a batter forms. Do not overmix.
Toss the chopped apples, cinnamon and 1 teaspoon flour together. Fold the apples into the batter until evenly distributed. Spread the batter into the prepared pan.
Sprinkle the crumb topping evenly over the batter and gently press it down with a rubber spatula.
Bake for about 50 minutes, or until the top is golden brown and a toothpick inserted into the center comes out clean. Remove from the oven and let cool for about 30 minutes.
TO MAKE THE GLAZE:
Whisk together the powdered sugar, milk, and vanilla in a small bowl until smooth. Drizzle over the cooled cake. Cut into squares and serve.
Notes
Make sure ingredients such as eggs, butter, and sour cream are at room temperature.
Do not overmix the batter! Over-mixing can result in a dry and dense cake.
Use a metal or glass baking pan. If you use a ceramic pan, the cake will take longer to bake.
How to store it?
Store the Apple Crumb Cake in an airtight container at room temperature for up to 2 days, or in the refrigerator for up to 5 days.
Can I freeze it?
Yes, you can freeze it. Once baked and completely cooled, wrap the cake in plastic wrap, then place it in a container or freezer bag. Store in the freezer for 1–2 months. Thaw overnight in the refrigerator before serving.