Croissant Casserole

• 8 ounces cream cheese, at room temperature
• 2 tablespoons powdered sugar, plus more for dusting
• 2 1/4 teaspoons vanilla extract, divided
• 8 large eggs
• 2 cups whole milk
• 2/3 cup granulated sugar
• 4 tablespoons unsalted butter, melted, plus more for baking dish
• 1 tablespoon grated lemon zest (from 2 large lemons)
• 1 teaspoon ground cardamom
• 3/4 teaspoon kosher salt
• 24 (4 1/2-inch) day-old mini croissants or 12 large croissants, halved
• 1 (12.7-ounce) jar store bought lemon curd (such as Bonne Maman) (about 1 cup)

Macerated Berries

• 1 pint (10 ounces) fresh blueberries, divided (about 2 cups)
• 6 ounces fresh blackberries, divided (about 1 cup)
• 3 tablespoons granulated sugar
• 1 1/2 teaspoons fresh lemon juice