Almond Flour Plum Cake Recipe: Buttery Crust and Jammy Plum Filling

This almond flour plum cake delivers a delicate crumb, buttery layers, and a jammy plum filling that feels like summer in every bite. The secret lies in balancing almond flour's natural richness with tender plum purée, creating a cake that's both elegant and comforting. I developed this recipe after years of perfecting gluten-free desserts that don't compromise on texture or flavor.

The foolproof technique begins with steaming plums to intensify their natural sweetness, then blending them into a smooth filling that's neither too watery nor overly thick. A buttery crust wraps the cake, adding structure while keeping every bite moist. The almond flour base ensures a tender crumb that holds up beautifully, even when sliced hours later.

What sets this cake apart is how it transforms simple ingredients into something restaurant-worthy. The plums caramelize slightly during baking, creating pockets of jammy goodness, while the almond flour gives it a subtle nuttiness that pairs perfectly with the fruit. It's the kind of dessert that feels special enough for company but simple enough for a weeknight treat.

For an extra touch, dust with powdered sugar or garnish with fresh plums before serving. This recipe works equally well with fresh or frozen plums, making it adaptable to any season. Let's bake this cake that tastes like a French patisserie but comes together with home kitchen simplicity.

Ingredients for almond flour plum cake

Eight simple ingredients transform into a restaurant-worthy almond flour plum cake.

The almond flour is the heart of this cake—Bob's Red Mill or Anthony's Goods are my go-tos for consistent texture. Fresh plums are ideal, but frozen work too (thaw and drain first). For the butter, Plugrá or Land O'Lakes unsalted gives the best flavor. The sugar should be superfine if possible, but regular granulated works in a pinch—just pulse it in a food processor for smoother texture. Lemon zest adds brightness, so use organic lemons if you can—they're more flavorful. For the crust, all-purpose flour adds structure without overpowering the almond's natural richness.

No almond flour? Substitute with 2 cups gluten-free 1:1 baking flour, but texture will differ. Fresh plums unavailable? High-quality plum jam (like Bon Appétit or Welch's) works in a pinch—just reduce the sugar slightly. For a richer flavor, add 1 tsp almond extract to the egg mixture. The baking powder must be aluminum-free—Bob's Red Mill or Clabber Girl are reliable brands. If you're short on time, pre-made almond flour crust mix (like King Arthur) can be used, but homemade tastes infinitely better. The lemon zest can be zested fresh or bought pre-zested at Trader Joe's—just check for no added oils.

Store the cake in an airtight container at room temperature for up to 3 days or refrigerate for 5 days. For longer storage, freeze the whole cake (without garnish) for up to 3 months. To serve, dust with powdered sugar and garnish with fresh plum slices—this adds a beautiful contrast. The cake reheats beautifully in a 200°F oven for 10 minutes if it's been refrigerated. Portion into individual slices for easy serving, and always save the leftovers for seconds—they're even better the next day.

Step-by-step instructions for almond flour plum cake

Here's how to create a perfectly balanced cake with a buttery crust and luscious plum filling.

Preheat your oven to 350°F and steam the 2 cups fresh plums for 10 minutes until tender. Transfer the plums to a food processor and purée until completely smooth, then strain through a fine-mesh sieve to remove any seeds or skin. The filling should be thick but pourable—if needed, simmer it in a small saucepan for 5 minutes to reduce slightly.

While the filling cools, zest 1 tablespoon lemon zest and set aside. The acidity from the lemon will brighten the plum flavor and prevent the cake from becoming overly sweet. Stir the lemon zest into the plum purée and let the mixture cool completely before using. This step ensures your filling stays vibrant and complements the cake's texture perfectly.

In a stand mixer fitted with the paddle attachment, cream together the 1 cup unsalted butter and 1.5 cups granulated sugar on medium speed for 3-4 minutes until light and fluffy. The mixture should nearly double in volume and turn pale, indicating proper aeration. This step is crucial for creating a tender, moist cake with a fine crumb.

Add the 4 whole large eggs, one at a time, mixing well after each addition. Scrape down the sides of the bowl as needed to ensure all ingredients are incorporated. Stir in the 1 tablespoon vanilla extract and mix for 30 seconds to combine. In a separate bowl, whisk together the 2.5 cups almond flour, 0.5 cup all-purpose flour, 1 teaspoon baking powder, and 0.5 teaspoon salt. Gradually add the dry ingredients to the wet mixture, mixing on low speed just until combined.

Grease and flour an 8-inch round cake pan and line the bottom with parchment paper. Pour half of the batter into the prepared pan and spread it evenly. Spoon the cooled plum filling over the batter, spreading it evenly to cover the entire surface. Pour the remaining batter over the filling and gently swirl the two layers together using a knife or spatula. This creates a marbled effect that enhances the visual appeal and flavor distribution.

Bake in the preheated oven for 40-45 minutes, or until a toothpick inserted into the center comes out clean. The cake should be golden brown on top and slightly domed in the center. If the top browns too quickly, tent the cake with aluminum foil to prevent overbrowning while ensuring it cooks through evenly.

Once the cake is baked, remove it from the oven and let it cool in the pan for 10 minutes. Transfer the cake to a wire rack and cool completely before slicing. While the cake cools, prepare the garnish by arranging the 8 pieces fresh plum slices on a plate. Dust the top of the cake generously with 0.25 cup powdered sugar using a fine-mesh sieve for an elegant finish.

Slice the cake into 8 equal pieces and serve immediately or store in an airtight container for up to 3 days. The contrast of the buttery crust, tender almond flour cake, and jammy plum filling makes this dessert truly special. Enjoy each slice warm for the best experience, with the plum slices on the side to enhance the natural sweetness.

Flavor customization for this recipe

Citrus Twist

Add 1 tbsp orange zest and 1 tbsp lime juice to the plum filling for a zesty twist that brightens the natural sweetness. I find this works especially well with Burbank plums, which have a more tart profile. The citrus also helps balance any overly ripe plums you might have on hand. 🍊

Spiced Plum Filling

Infuse the plum purée with ½ tsp cinnamon, ¼ tsp cardamom, and a pinch of clove while simmering. This adds warmth that pairs beautifully with the almond flour's nuttiness. For extra depth, I sometimes add 1 tsp plum brandy or frangipane cream between layers instead of plain filling.

Chocolate-Dipped Layers

For a decadent variation, melt ½ cup dark chocolate (70% or higher) and drizzle it between the cake layers before adding the plum filling. This creates pockets of rich chocolate that contrast perfectly with the fruity plum. I use Ghirardelli 60% or 70% dark chocolate bars for the best flavor without overpowering the cake.

Caramelized Plum Topping

Instead of a simple plum filling, caramelize 1 cup chopped plums with 2 tbsp brown sugar and 1 tbsp butter until syrupy. Spread this over the first cake layer before adding the second. The caramelized plums add a deeper, more complex flavor that feels restaurant-quality. This works especially well with frozen plums since they concentrate the sugars during cooking.

Almond-Infused Variations

Boost the almond flavor by adding 1 tsp almond extract to the batter or by toasting ½ cup sliced almonds and sprinkling them between the layers. For extra crunch, I like to toast the almonds with ½ tsp cinnamon until golden. This adds texture contrast that elevates the cake's overall experience. 🌰

Seasonal Fruit Swaps

While plums shine in summer, try peaches in late summer or apricots in early fall. For winter, swap in steamed pears with a touch of star anise in the filling. I've even used blueberries in a pinch—just reduce the lemon zest to ½ tbsp since blueberries are less acidic. The key is balancing fruit acidity with sweetness to keep the cake's structure intact.

Frequently asked questions