Flag Cake with Cream Cheese Topping

Bahan-bahan (18 porsi)

• 14.25 ounces white cake mix ( plus ingredients required on the box)
• 1 box strawberry Jell-o (4 serving size)
• 1 cup blueberries
• 1 pint fresh strawberries (more as needed)
• 8 ounces cream cheese (softened)
• ⅓ cup granulated sugar
• 8 ounces whipped topping (or 3 cups stabilized whipped cream)