Homemade Patriotic Sheet Cake for 20

Instructions:

1. Preheat oven to 350°F (175°C) and line a 13x9 inch baking pan with parchment paper.
2. Cream the softened butter and granulated sugar together until the mixture is pale and fluffy.
3. Beat in the eggs one at a time, then stir in the vanilla extract until smooth.
4. In a separate bowl, whisk together the flour, baking powder, and salt.
5. Alternately add the dry flour mixture and the sour cream into the butter mixture, stirring until just combined.
6. Pour batter into the prepared pan and bake for 15–20 minutes, or until a toothpick inserted in the center comes out clean with a few moist crumbs.
7. Allow the cake to cool completely to prevent the frosting from melting.
8. Prepare the frosting by beating low-fat cream cheese, butter, powdered sugar, vanilla, and heavy cream until velvety.
9. Spread frosting evenly across the cooled cake.
10. Decorate the cake by arranging blueberries in a rectangle in the top-left corner and creating stripes with alternating rows of sliced strawberries and frosting.