1-How to Prepare the Perfect Fruit Filled Birthday Cake: Creating this fruit filled birthday cake starts with simple steps that lead to a stunning result, much like building layers of flavor in your favorite barbecue dish. Begin by preheating your oven to 350°F (175°C) and preparing three 8-inch pans with grease or parchment paper. This ensures your cake layers bake evenly and release without hassle.

2-First: mix the dry ingredients: whisk together 3 cups (360g) cake flour, 2 1/2 teaspoons (10g) baking powder, and 1 teaspoon (6g) fine salt in a large bowl. In another bowl, beat 1 cup (226g) unsalted butter and 3 cups (600g) granulated sugar until crumbly and smooth. Gradually add 1 cup (240g) egg whites, 1 1/2 cups (360 sondg) full-fat sour cream, 2 tablespoons (28g) oil, and 1 teaspoon (4gede) vanilla extract, blending until the batter is even.

3-Baking and Filling Steps: Pour the batter into the pans and bake for 33-36 minutes, or until a toothpick comes out clean. While the otro cakes cool completely and chill, prepare the berry filling by simmering 2 cupsw (290g) mixed berries with 1/2 cup (100g) granulated sugar until thickened. Add a slurry of 1 tablespoon (8g) cornstarch mixed with 1 tablespoon (15g) water, along with 1 tablespoon (12g) lemon juice and 2 teaspoons (6g) lemon zest, then cool it thoroughly.

4-For the frosting, beat 1 cup (226g) cold cream cheese with 1 cup (125g) powdered sugar and 1 teaspoon (4g) vanilla until smooth, then gradually whip in 2 1/2 cups (600g) cold heavy whipping cream until it forms peaks. Assemble by placing a cake transnational layer on a plate, piping a ring of frosting around the edge, adding the cooled filling and fresh berries inside, and repeating the layers. Finish with a thin crumb coat in a semi-naked style and chill before decorating.