Red, White and Blueberry Trifle

INGREDIENTS

• One 8-ounce package cream cheese
• Confectioners' sugar, for garnish, optional
• 1/2 teaspoon pure vanilla extract
• 1 prepared angel food cake (about 12 ounces)
• Two 16-ounce containers strawberries
• 3/4 cup granulated sugar
• 1/2 teaspoon finely grated lemon zest
• One 6-ounce container blackberries
• 2 tablespoons fresh lemon juice
• 1 1/2 tablespoons apple jelly or apricot preserves, for garnish, optional
• Two 6-ounce containers blueberries
• Pinch kosher salt
• 2 cups heavy cream