Step 1: Preheat your oven to 350°F (175°C). Grease and flour two 8-inch round cake pans, or line them with parchment paper circles on the bottom. Prepare these pans carefully, as this is a key step for all summer cake recipes.
Step 2: In a large bowl, cream together the softened unsalted butter and granulated sugar until light and fluffy, about 3-5 minutes with an electric mixer.
Step 3: Beat in the eggs one at a time, ensuring each is fully incorporated before adding the next. Stir in the vanilla extract and fresh lemon zest.
Step 4: In a separate medium bowl, whisk together the all-purpose flour, baking powder, and salt.
Step 5: Gradually add the dry ingredients to the wet ingredients, alternating with the buttermilk, beginning and ending with the dry ingredients. Mix until just combined; do not overmix. This technique helps maintain a tender crumb for these lovely summer cake recipes.
Step 6: Gently fold in 1 cup of the mixed fresh berries. Be careful not to crush them.
Step 7: Divide the batter evenly between the prepared cake pans. Bake for 28-32 minutes, or until a wooden skewer inserted into the center comes out clean. Cool the cakes in the pans for 10 minutes before inverting onto a wire rack to cool completely.
Step 8: While the cakes cool, prepare the frosting. In a large bowl, beat the softened cream cheese and unsalted butter together until smooth and creamy, about 2-3 minutes. Ensure both are at room temperature.
Step 9: Gradually add the powdered sugar, beating until fully incorporated. Then, beat in the fresh lemon juice and vanilla extract until the frosting is smooth and light.
Step 10: If the frosting feels too soft, cover it and refrigerate for 15-20 minutes to firm up slightly. This is especially helpful for summer cake recipes in warm weather.
Step 11: Once the cake layers are completely cool, place one layer on your serving plate. Spread about a third of the lemon cream cheese frosting evenly over the top.
Step 12: Arrange a layer of fresh berries over the frosting.
Step 13: Carefully place the second cake layer on top. Repeat with another third of the frosting and more fresh berries.
Step 14: Use the remaining frosting to cover the top and sides of the cake. Garnish generously with the remaining fresh berries and a few curls of lemon zest. This vibrant decoration is common for many summer cake recipes.
Step 15: Refrigerate the cake for at least 30 minutes before serving to allow the frosting to set and flavors to meld. Enjoy this delightful addition to your collection of summer cake recipes!