This white chocolate caramel apple cake is fall in dessert form. Tender cinnamon-caramel cake layers are filled with a spiced apple filling and a soft caramel ganache, then wrapped in silky white chocolate buttercream. The cake is finished with a pool of caramel on top and a cinnamon-sugar coating on the sides for that classic caramel-apple flavor and texture.
Inspiration
This cake was inspired by a favorite autumn tradition: scouting witches at Gardner Village, then stopping at Rocky Mountain Chocolate Factory for a caramel apple. The apple pie flavor — white chocolate, caramel, and a cinnamon-sugar dusting — stuck with me, so I recreated it as a layered cake. I already had a caramel apple cake, but this version highlights white chocolate with a cinnamon-sugar exterior for a fresh take.
About the caramel
For the drizzle between layers and the topping, I turn regular caramel into a caramel ganache by stirring in heavy cream. Straight caramel can harden in the fridge, but adding cream keeps it soft and sliceable after refrigeration. Any store-bought caramel will work (I like Peter’s) or use homemade, but don’t skip the cream—this step makes serving much easier.
When slicing, a hot sharp knife and a cold cake make the cleanest cuts. Chill the cake before serving and heat the knife briefly between slices.
Incorporating ganache into buttercream
Adding a white chocolate ganache to buttercream is simpler than it seems and boosts flavor nicely. Make sure the white chocolate is fully melted and incorporated into the cream, and let it cool slightly before mixing into the butter to avoid melting the butter. This keeps the buttercream stable while delivering rich white chocolate taste.
I love the caramel pool technique on top — it mimics a caramel apple and gives the cake a playful, seasonal look.
Filling
The apple filling is my go-to: finely cubed apples cooked with brown sugar, cinnamon, a splash of lemon, and a cornstarch slurry to thicken. Aim for very small, pea-sized apple cubes so the filling layers evenly and every bite has a perfect apple texture.
Use tart apples such as Honeycrisp or Granny Smith — their bright acidity balances the sweet caramel and brown sugar nicely. Prepare cake layers and the filling the same day, and make the white chocolate buttercream just before assembly for best texture.
Each slice combines the aromas and flavors of a caramel apple — white chocolate, warm cinnamon, tart apple, and soft caramel — making this cake a cozy centerpiece for fall gatherings.
That’s it — I hope you love this new cake as much as we did. If you bake one, tag @bakingwithblondie and #bakingwithblondie to share your results. Happy baking — xo, Mandy
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White Chocolate Caramel Apple Cake
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Ingredients
Caramel Apple Cake Layers
- 2/3 cup buttermilk, room temperature
- 1/3 cup sour cream, room temperature
- 1/3 cup applesauce
- 4 large egg whites, room temperature
- 1/3 cup vegetable oil
- 1 Tablespoon vanilla
- 1 Tablespoon cinnamon
- 1 teaspoon Lorann caramel emulsion, optional
- 1 box white cake mix, Duncan Hines or Betty Crocker recommended
Apple Filling
- 2 cups finely cubed Honeycrisp or Granny Smith apples
- 1 Tablespoon lemon juice
- 1/2 cup brown sugar
- 2 teaspoons cinnamon
- 1 pinch salt
- 4 Tablespoons water
- 1 slurry 1/4 cup water + 1 teaspoon cornstarch, stirred together
White Chocolate Buttercream
- 1/2 cup white chocolate chips
- 1/2 cup heavy cream
- 3 sticks (1 1/2 cups) unsalted butter
- 1 pinch salt
- 1 Tablespoon vanilla
- 8-9 cups powdered sugar
- 1 teaspoon Lorann caramel emulsion, optional
Caramel Ganache
- 2 cups caramel (homemade or store-bought)
- 1/4 cup heavy cream
Extras
- 1 cup cinnamon sugar (1 cup sugar + 2 Tablespoons cinnamon)
Instructions
For the Caramel Apple Cake Layers:
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Preheat oven to 325°F on convection (or adjust for your oven). Prepare three 6″ cake pans with shortening and flour to prevent sticking.
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Whisk together all wet ingredients except the cake mix. Sift in the cake mix and stir gently until just combined. Divide batter evenly among prepared pans.
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Bake 25–27 minutes, then cool completely on a wire rack. Wrap and freeze at least a couple of hours to make stacking easier.
For the Apple Filling:
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In a medium saucepan over medium heat, combine apples, lemon juice, brown sugar, cinnamon, salt, and water. Cook until apples are tender and the mixture bubbles.
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Stir in the cornstarch slurry and cook until thickened. Transfer to a glass dish, cover, and chill until cool and set before stacking.
For the White Chocolate Buttercream
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Combine white chocolate chips and heavy cream in a small heatproof bowl. Microwave 30 seconds, stir, then 15–20 seconds more until smooth and lump-free. Cool slightly before adding to buttercream.
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In a stand mixer with the paddle attachment, beat butter until light and fluffy.
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Add the cooled white chocolate mixture, salt, and vanilla, and mix to combine.
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Slowly add powdered sugar 1/2 cup at a time on low speed. Increase speed and whip until light and fluffy. Add a tablespoon of heavy cream if the buttercream needs thinning.
Assembly
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On a cake turntable with a cardboard round, place a dab of buttercream to secure the first cake layer.
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Spread a thin layer of buttercream, then pipe a firm dam around the edge. Add about 1/2 cup apple filling to the center and drizzle some caramel ganache. Top with the next layer and repeat.
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Crumb coat the cake and freeze briefly until set, about 5 minutes.
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Add the final layer, smooth the sides with a scraper, and leave a slightly raw edge on top for a rustic look. Place the cake on a cookie sheet and gently press cinnamon sugar onto the sides. Finish with a pool of caramel on top.
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Serve chilled for clean slices and enjoy.