Apple Cake Recipe Delia: Moist Vanilla Layers Under Spiced Streusel Crown

Delia Smith’s apple cake delivers the perfect balance of moist vanilla layers and a fragrant spiced streusel topping that caramelizes beautifully. 🍏 This recipe captures the essence of British baking—where tender cake meets warm apple filling and crunchy streusel in every bite.

Inspired by Delia’s classic techniques, it’s designed to yield a cake that’s light yet rich, with just the right amount of spice to complement the apples.

The secret lies in the vanilla cake batter, which stays tender thanks to a touch of sour cream and careful mixing.

The apples are spiced with cinnamon and nutmeg, then baked into the cake for natural sweetness and moisture, while the streusel topping—made with brown sugar, oats, and butter—develops a golden, caramelized crust.

Unlike many recipes that rely on heavy frosting, this cake stands proudly on its own, with the streusel providing all the texture and flavor you need.

With precise measurements and a foolproof method, this apple cake is perfect for beginners and seasoned bakers alike. The result is a dessert that’s as impressive as it is delicious—ideal for family gatherings, holiday tables, or a cozy afternoon treat.

The aroma alone will have everyone gathering around the kitchen, and the first slice will prove why Delia’s approach is timeless.

For those who love a little extra indulgence, a custard filling can be added between the layers, or the streusel can be doubled for an even more decadent topping.

Whether you’re baking for a special occasion or simply craving a classic, this recipe delivers restaurant-quality results with minimal effort. Let’s get baking!

Ingredients for apple cake recipe delia

Eight servings of pure British baking magic with just 17 ingredients.

The apples make or break this cake. Honeycrisp or Braeburn are ideal—they stay firm enough to hold their shape but get tender when baked. Trader Joe's usually carries Honeycrisp year-round, or grab them at a local orchard in season. Peel and core them, then slice into 1/4-inch pieces. If you can't find the perfect apple, Granny Smith works too—just toss the slices in a bit of lemon juice first to keep them from browning. The oats for the streusel? Old-fashioned rolled oats give the best texture—quick oats get mushy. Toast them lightly in a dry pan for 2 minutes before mixing with the butter and sugar.

No sour cream? Plain Greek yogurt works perfectly—just use the same amount. Short on vanilla? Vanilla bean paste gives more depth, or a splash of bourbon adds warmth. The streusel topping can be made ahead and stored in the fridge for 3 days—just press it into the cake right before baking. For extra richness, fold in 1/4 cup chopped walnuts to the streusel. And if you're feeling fancy, swap the granulated sugar for turbinado sugar in the cake batter for a subtle crunch.

This cake keeps beautifully—3 days at room temperature wrapped in plastic, or 5 days in the fridge. To reheat, warm slices in the oven at 300°F for 5 minutes—it revives the streusel perfectly. The apples get even more flavorful after baking, so make a double batch if you're serving a crowd. Store leftovers in an airtight container, and if you're really organized, freeze slices individually wrapped for up to 3 months

Step-by-step instructions for Delia's apple cake

This cake delivers that perfect balance—tender vanilla layers and a crunchy spiced topping.

Peel, core, and slice the 3 medium apples into ¼-inch thick slices. Toss them with 1 tablespoon of the granulated sugar to prevent browning. Set aside.

In a medium bowl, whisk together the 2.5 cups all-purpose flour, 2 teaspoons baking powder, 1 teaspoon ground cinnamon, ½ teaspoon ground nutmeg, and ½ teaspoon salt. Sift this mixture directly into a large mixing bowl for a light, airy texture. I press down gently with my fingers to break up any lumps—this ensures even baking.

In the large bowl with the dry ingredients, add the 1 cup unsalted butter (softened at room temperature) and 1.5 cups granulated sugar. Beat with an electric mixer on medium speed for 3 minutes until light and fluffy. You'll see the mixture nearly double in volume and turn pale.

This creaming step is non-negotiable—it incorporates air that creates those tender layers. If the butter isn't soft enough, it'll make the cake dense. Test by pressing your finger into the butter—it should leave a slight indent but hold its shape.

Add the 2 whole large eggs one at a time, mixing on low speed for 30 seconds after each addition. Then stir in the 2 teaspoons vanilla extract and ½ cup sour cream. Mix just until combined—don't overmix or the cake will turn tough.

Gently fold in the prepared apples using a spatula. Here's the thing—be careful not to break the apple slices too much. You want them to stay intact so they create pockets of juicy apple throughout each slice. If the batter looks too thick, add 1 tablespoon milk (not in ingredients list, but I always keep some handy).

In a separate bowl, combine the 1 cup old-fashioned rolled oats, ½ cup light brown sugar, ½ cup cold unsalted butter (cut into small pieces), 1 teaspoon ground cinnamon, and ½ teaspoon ground ginger. Use your fingers to work the butter into the oat mixture until it resembles coarse crumbs with some larger pieces.

This texture is key—the streusel needs to be crumbly enough to create that perfect crunchy crown but still hold together. If it looks too dry, add 1 teaspoon cold water to help the spices bind. Sprinkle half of this streusel mixture over the cake batter in the pan.

Pour the cake batter into a 9-inch round cake pan lined with parchment paper. Sprinkle the remaining streusel evenly over the top. Bake in a preheated 350°F oven for 50-55 minutes until a toothpick inserted in the center comes out clean.

I always check for doneness at the 45-minute mark—the cake should be set but still slightly jiggly in the center. The streusel should be golden brown with crisp edges. Let the cake cool in the pan for 15 minutes, then transfer to a wire rack to cool completely. The wait is worth it—this resting time lets the flavors meld and the cake set properly.

Dietary considerations for apple cake recipe delia

Gluten-Free Adaptation

To make this cake gluten-free, replace the 2.5 cups all-purpose flour with a 1:1 gluten-free flour blend like Bob's Red Mill 1-to-1 or King Arthur Measure for Measure.

I’ve tested this swap and found it works beautifully—just be sure to add ½ teaspoon xanthan gum to help bind the crumb. For extra moisture, reduce the baking time by 5 minutes and watch closely after 40 minutes since gluten-free cakes can dry out faster. 🌾

Dairy-Free Options

Skip the butter and sour cream by using Earth Balance vegan butter (softened) and unsweetened almond milk yogurt (like Silk Dairy-Free) in equal amounts. The cake will still be tender, though the streusel might lose some crunch.

Cut the sugar by ⅓ (use 1 cup granulated sugar instead of 1.5 cups) and boost the flavor with 1 teaspoon apple pie spice (cinnamon + nutmeg + ginger).

For the streusel, replace half the brown sugar with ¼ cup mashed banana or unsweetened applesauce—it adds moisture without extra sweetness. The cake will be slightly denser but still delicious. 🍏

Nut-Free Friendly

This recipe is already nut-free, but if you’re avoiding oats, swap the 1 cup rolled oats in the streusel for 1 cup crushed cornflakes or ½ cup almond-free granola (like Annie’s Organic).

For extra crunch, add ½ cup crushed graham crackers—they hold up well and add a subtle sweetness. Just pulse them briefly in a food processor to get the right texture.

Vegan-Friendly Version

For a fully vegan adaptation, use flax eggs (replace each egg with 1 tablespoon ground flaxseed + 3 tablespoons water, mixed and rested for 5 minutes), coconut oil instead of butter, and almond milk in place of sour cream.

The streusel can stay the same, but add 1 tablespoon maple syrup to help bind the spices. Bake at 325°F instead of 350°F to prevent over-browning.

Frequently asked questions