A fresh and indulgent blueberry layer cake with moist blueberry sponge layers and a tender fruit purée filling. The whole cake is coated with a light, tangy mascarpone whipped cream frosting with lemon — ideal for summer gatherings.
This blueberry layer cake is a fruity, refreshing dessert for lovers of summer berries and soft, tender cakes. It balances the sweet, slightly tart flavor of blueberries with a smooth, airy mascarpone whipped cream frosting.
The cake features a tender blueberry sponge, a homemade blueberry purée for the filling, and a light lemon-scented mascarpone chantilly used both between the layers and as a smooth exterior frosting.
Perfect for a summer birthday, baby shower or any seasonal celebration where you want a pretty, fruity centerpiece.
Why We Love This Recipe
- Moist and fruity: A light blueberry sponge and a melting homemade purée filling.
- Fresh, tangy frosting: A lemony mascarpone chantilly that keeps the cake airy and balanced.
- Great for occasions: Elegant and delicious — ideal for summer parties and family celebrations.
Craving more blueberry treats? Try blueberry muffins, a blueberry tart, blueberry cinnamon rolls or blueberry cupcakes for more seasonal inspiration.
Ingredient Notes
To make this blueberry layer cake you’ll need the following components:
- Blueberry sponge: a slightly lemony buttermilk sponge with fresh blueberries.
- Blueberry purée: a simple homemade compote or purée made from frozen or fresh blueberries with lemon juice and sugar.
- Mascarpone frosting: a lemon-scented mascarpone chantilly for the filling and a firmer mascarpone frosting for the exterior finish.
Equipment suggestion: a stand or hand mixer, cake pans, a turntable, piping bags and a spatula make assembly and smoothing much easier.
How to Make the Blueberry Layer Cake
Below are the main steps at a glance. Full ingredient amounts and the detailed recipe are in the recipe card further down.
Cream softened butter with sugar and lemon zest using an electric mixer for about 3 minutes until smooth and airy.
Add the eggs and vanilla extract, then beat for another 4–5 minutes until the mixture is light and well incorporated.
Sift the dry ingredients and add them alternately with the buttermilk-lemon mixture, folding gently with a spatula until the batter is smooth. Fold in blueberries that have been lightly tossed in flour to prevent sinking.
Preheat the oven to 165°C (fan). Line three 15 cm cake pans with parchment. Divide the batter and bake for 40–45 minutes, or until a skewer comes out clean. Cool in the pans for 10 minutes, then turn onto a wire rack to cool completely.
To assemble: place the first sponge on a cake board set on a turntable. Pipe a ring of mascarpone frosting around the edge to form a dam, then fill with a layer of mascarpone chantilly and a thin spoonful of blueberry purée. Repeat with the second layer, finish with the top sponge (flat side up for a cleaner finish).
Cover the assembled cake with a thin crumb coat of the firmer mascarpone frosting and chill 15–20 minutes. Apply a final thicker layer of frosting, smooth with a cake scraper, pipe decorations with remaining chantilly and add a few dots or a light drizzle of blueberry purée. Chill at least 1 hour before serving to firm up the frosting.
Tips for Success
- Pipe a frosting barrier around each layer to contain the blueberry purée and prevent leaking.
- Use a firm mascarpone chantilly for assembly and the outer coating — lighter than buttercream but handle gently.
- Chill between steps if the cream softens or the layers feel unstable to keep everything tidy.
- Don’t overfill with purée — a thin layer is enough to add flavor without slipping the layers.
Variations & Substitutions
- Lemon-blueberry version: add a thin layer of lemon curd for extra brightness.
- Blueberries + raspberries: mix the two fruits for a more colorful, tart filling.
- Plain sponge: bake a vanilla sponge and keep the blueberries only in the filling.
- Naked cake look: leave the sides partially unfrosted for a rustic presentation.
- Fruit decorations: top with fresh blueberries, edible flowers or white chocolate shavings.
- Use jam instead of purée if you prefer a thicker, less runny filling.
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I hope you enjoyed this blueberry layer cake recipe! Feel free to rate it and leave a comment to let me know how it went. Happy baking!