Overnight Blueberry French Toast

Bahan-bahan (12 porsi)

• 12 slices (about 1 pound) thick, stale Challah bread ((one loaf))
• Two 8-ounce packages cream cheese ((or mascarpone cheese))
• 1 cup fresh or frozen blueberries ((or maybe a little more))
• 12 large eggs
• 2 cups milk
• 1 teaspoon vanilla extract
• ⅓ cup maple syrup
• 1 cup granulated white sugar
• 2 tablespoons cornstarch
• 1 cup water
• 1 cup fresh blueberries
• 1 tablespoon butter