Last Updated on February 16, 2026 by Kimberly Stroh

If you love the sweet-tart flavor of blueberries wrapped in soft, fluffy cake, this Blueberry Jam Cake is about to become your new favorite showstopper. With layers of tender white cake, a vibrant homemade blueberry jam filling, and a dreamy cream cheese frosting blended into three beautiful shades, this cake tastes just as stunning as it looks.

Why We Love This Cake Recipe

What makes this recipe extra special is the fresh, from-scratch blueberry jam. It’s brightened with a touch of lemon juice and thickened just enough to create the perfect spreadable layer between each cake round. The jam adds a burst of juicy berry flavor that balances perfectly with the rich, silky cream cheese frosting.

Designed to serve 14 to 16, this cake is ideal for birthdays, brunches, spring gatherings, or anytime you want an impressive dessert that’s surprisingly simple to make. The ombré frosting effect gives it a bakery-style finish, while the familiar flavors of blueberries and vanilla keep every bite comforting and nostalgic.

With just over an hour of active time and a little patience while the jam chills, you’ll have a beautiful layered cake that looks elegant on the table.

Blueberry Jam Cake Ingredients

For The Jam Filling & Cake:

• White Cake Mix (15.25oz box)
• Granulated Sugar
• Low or No-Sugar-Needed Fruit Pectin
• Salt
• Fresh (or thawed frozen) Blueberries
• Lemon Juice

For The Frosting:

• Unsalted Butter
• Confectioners’ Sugar
• Cream Cheese
• Vanilla Extract

How To Prep This Cake Ahead of Time

This Blueberry Jam Cake is easy to prepare ahead of time, making it perfect for entertaining. The jam can be made up to 3–4 days in advance and stored in airtight containers in the refrigerator until ready to use. Cake layers can be baked 1–2 days ahead, wrapped tightly, and refrigerated, or frozen for up to a month for maximum freshness.

For the best flavor and texture, the cake can be fully assembled and frosted one day before serving, then refrigerated overnight to allow the layers to meld together. Before serving, let the cake sit at room temperature for 60–90 minutes for the creamiest frosting and softest crumb.

Tips For Making Layer Cakes

• Use room temperature ingredients – Eggs, butter, and dairy blend more smoothly and create a better texture.

• Measure flour correctly – Spoon and level (don’t scoop) to avoid a dense cake.

• Line pans with parchment – Guarantees clean release every time.

• Weigh your batter – Divide evenly between pans for uniform layers.

• Tap pans before baking – Removes large air bubbles for a tighter crumb.

• Cool completely before frosting – Even slightly warm cake will melt frosting.

• Level your layers – Trim domed tops with a serrated knife for stable stacking.

• Use a crumb coat – A thin first layer locks in crumbs and makes the final coat flawless.

How To Store Leftovers

Because this Blueberry Jam Cake is topped with cream cheese frosting, leftovers should be stored in the refrigerator. Keep the cake in an airtight container or press plastic wrap gently against the cut edges to prevent it from drying out; a cake dome works well for larger portions.

For the best flavor and texture, enjoy within 3 to 4 days. Before serving, let slices sit at room temperature for 30 to 60 minutes so the frosting can soften and the cake becomes tender again.

If you’d like to freeze leftovers, wrap individual slices tightly in plastic wrap and then foil, and freeze for up to 1 month. Thaw overnight in the refrigerator and bring to room temperature before serving for the best results.

How To Make This Blueberry Jam Cake (Step-By-Step)

Follow the instructions on the back of a box of white cake mix, baking it as a three-layer cake. Set the layers aside to cool after baking.

FOR THE JAM FILLING: Process sugar, pectin, and salt in a food processor until combined, about 3 seconds. Add blueberries and pulse until coarsely chopped, 6 to 8 pulses.

Transfer blueberry mixture to medium saucepan and bring to a simmer over medium heat, stirring occasionally, until mixture is bubbling and just starting to thicken, 6 to 8 minutes.

Off heat, stir in lemon juice. Transfer 1⅓ cups jam to small bowl, cover, and refrigerate until firm, about 3 hours. Strain remaining jam through fine-mesh strainer, cover, and set aside. (You should have at least ¼ cup.)

FOR THE FROSTING: Using a stand mixer fitted with a paddle, beat butter and sugar on medium-high speed until light and fluffy, about 3 minutes. Add cream cheese, 1 piece at a time, and beat until no lumps remain.

Add vanilla and 2 tablespoons strained jam and mix until incorporated.

Transfer 1/2 cup frosting to each of 2 small bowls. Add 1 teaspoon strained jam to first bowl and 1 tablespoon strained jam to second bowl, stirring well to combine. (You should have 3 shades of frosting.)

To Assemble: Place 1 cake round on cake turntable. Spread ⅔ cup chilled jam in even layer over top. Place second cake round on top of jam and repeat with remaining chilled jam.

Place third cake round on top. Spread small amount of lightest-colored frosting in even layer over top and sides of cake.

Using small offset spatula, spread darkest-colored frosting over bottom third of sides of cake, medium-colored frosting over middle third, and remaining lightest-colored frosting over top third.

While spinning cake turntable, run spatula from bottom to top of side of cake to blend frosting colors. While spinning cake turntable, run spatula over top of cake, working from outside in to create spiral. Serve.