1-How to Prepare the Perfect Chantilly Cake: Step-by-Step Guide: Creating a Chantilly cake starts with preheating your oven to 350°F, which sets the stage for a fluffy bake. Grease two 9-inch round cake pans, line them with parchment paper, and use baking strips to keep the layers even. Sift together the cake flour, baking powder, and salt to ensure a smooth mixture.

2-Next, beat the softened butter until it’s creamy, then mix in the granulated sugar until the blend is light and fluffy. Add the eggs one at a time, followed by the vanilla extract for extra flavor. Alternate adding the flour mixture, vegetable oil, and whole milk on low speed to keep the batter airy.

3-Divide the batter between the pans, smooth the tops, and bake for 40 to 45 minutes until a toothpick inserted comes out clean. Let the cakes cool in the pans for 20 minutes, then move them to a wire rack. For the berry filling, warm the jam and water in the microwave, hull and slice the strawberries, and toss them with raspberries, blueberries, lemon zest, and juice.

4-Making the Chantilly Cream: To prepare the Chantilly cream, beat the mascarpone cheese and cream cheese until smooth, then gradually add the sifted powdered sugar. Whip the cold heavy whipping cream with vanilla extract until stiff peaks form, and gently fold it into the cheese mixture for a stable frosting.

5-Assemble the cake by slicing each layer horizontally into two, creating four layers in total. Spread a thin layer of berry jam, add Chantilly cream, and top with fresh berries, repeating for each layer. Finish by covering the top and sides with more cream, decorate with extra berries, and chill for at least 2 hours. Prep time is 20 minutes, cook time is 40 minutes, with 4 hours for resting, totaling about 5 hours.