Apple-Spice Layer Cake with Caramel Swirl Icing

From the kitchen of Carly

Dense, buttery layers perfumed with cinnamon, allspice, and nutmeg get anchored by molasses depth and topped with a caramel swirl that catches light like amber. This is the cake that makes people ask for seconds before finishing their first slice.

Apple-Spice Layer Cake with Caramel Swirl Icing

Three butter-soft layers studded with shredded apple and warm spices, stacked tall with caramel-swirled mascarpone frosting and pecans. The molasses adds depth, the fresh ginger a sharp note. This cake walks a line between homey and fancy, making it the one you bake when you want to impress without pretending you didn't have fun baking it.

Prep
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Cook
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Total
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Servings
4
Difficulty
medium

Ingredients

4 servings

  • 1 1/2 cupunsalted butter at room temperature
  • 3 cupsugar
  • 2 tbsplight molasses
  • 6 largeeggs
  • 3 cupcake flour
  • 1 1/4 tspbaking soda
  • 1/4 tspkosher salt
  • 2 tbspground cinnamon
  • 2 tspground allspice
  • 1 tspground nutmeg
  • 1 tspground ginger
  • 1 cupsour cream
  • 3Granny Smith apples, peeled and shredded
  • 1 tbspvanilla extract
  • 1 tbspgrated fresh ginger
  • 1One 14-ounce bag caramels
  • 4 tbspheavy whipping cream
  • 2 tbspplus 1 1/2 cups unsalted butter at room temperature
  • 1 tspvanilla extract
  • 3 cuppowdered sugar
  • 1 cupmascarpone
  • 2 cuppecan pieces
  • 1toasted

Instructions

  1. Position one rack in the bottom third of the oven and another in the top third; bring the oven up to 350°F. Coat three 9 inch cake pans with butter or cooking spray, drop a parchment round into each, and grease the parchment rounds too. Take an electric mixer fitted with the paddle attachment and cream the butter and sugar on medium-high for about 3 minutes, until the mixture lightens and turns fluffy. Pause to scrape the sides of the bowl down with a rubber spatula. Beat in the molasses next. Drop in the eggs one at a time, mixing each fully before adding the next. In a medium bowl, stir the flour, baking soda, salt, and ground spices together to blend evenly. Now add the flour mixture and sour cream to the batter in alternating additions: start with flour, follow with sour cream, repeat until you've made 3 flour additions and 2 sour cream additions, ending with flour. Keep the mixer on low after each addition and stop the moment everything combines. Fold in the shredded apples, vanilla, and ginger last.

  2. Divide the thick batter evenly between the three prepared pans. Place two pans side by side on one oven rack and the third on the other rack, staggering them so none sits directly above another. Bake for 35 to 40 minutes, until the tops feel firm. Keep an eye on each layer: they may finish at slightly different times depending on placement. Pull from the oven and let cool in the pans for 10 minutes. Run a thin knife around the edges of each pan, then unmold the cakes onto wire racks to cool completely, 15 to 30 minutes, before any frosting goes on. The layers freeze beautifully, tightly wrapped, for up to 3 weeks; thaw at room temperature before unwrapping, then frost without delay.

  3. For the caramel base of the icing: drop the unwrapped caramels into a medium stainless-steel bowl with 2 tablespoons of the cream and 2 tablespoons of butter. Set the bowl over a saucepan holding 2 inches of simmering water. Stir the caramel mixture until completely smooth. Lift the bowl off the heat. Let it cool down, stirring every few minutes, until you can comfortably touch the side of the bowl, about 20 minutes. The cooling matters: warm caramel will melt the buttercream when folded in.

  4. While the caramel cools, build the buttercream: in an electric mixer fitted with the paddle attachment, beat the 1 1/2 cups of butter on medium-high for about 1 minute, just until it lightens in color. Pour in the remaining 2 tablespoons of cream along with the vanilla and powdered sugar; beat for 3 more minutes, until the mixture turns light and fluffy. Add the mascarpone last and beat on medium-low only until it incorporates. Resist any urge to overbeat the mascarpone or it may break and separate. Set aside 1/4 cup of the cooled caramel for the finishing drizzle. Fold the rest of the caramel into the frosting using large strokes, creating ribboned swirls throughout. Stop folding while the swirls are still visible, or they'll disappear into the frosting.

  5. Settle one cake layer onto a serving plate and spread a thick blanket of frosting across the surface. Add the second layer and cover with another thick layer of frosting. Top with the third cake layer and cover the entire top and sides with an even coat of frosting. Drizzle the reserved 1/4 cup of caramel across the top using a small spoon. Press the toasted pecan pieces around the sides of the cake to coat. A practical tip for slicing frosted layer cakes: a large serrated knife dipped in hot water cuts cleanly through every layer, and wiping the blade between slices keeps each cut neat and clean.

Tips from the kitchen

  • Shred your apples just before mixing the batter so they don't oxidize or release excess water that'll throw off the cake's crumb. A box grater works perfectly.
  • Stagger your three pans on two oven racks as directed, never stacking them directly above each other. Air needs to circulate, or your bottom layer will bake uneven and dense.
  • Caramel-mascarpone frosting is soft and loose compared to buttercream. Chill your assembled cake for at least 2 hours before serving so the layers set and the frosting firms up enough to slice cleanly.

Variations

  • Swap the pecans for walnuts or omit them entirely if you prefer the frosting unadorned.
  • Skip the fresh ginger in the batter if you don't have it, or double the ground ginger instead. The spice blend is already bold enough to stand on its own.
  • Use brown butter in the mascarpone frosting instead of regular butter for a nutty, deeper flavor that plays beautifully with the caramel swirl.
  • Layer the cake with a thin smear of salted caramel between each tier, then frost as written. It's extra, and worth it.

Make ahead and storage

Frost and chill the cake, then keep it covered in the fridge for up to 4 days. Don't freeze a frosted cake with mascarpone in it, the cream cheese will break. You can freeze unfrosted, cooled layers wrapped well for up to 3 months, then thaw and frost fresh.