Classic French Fruit Tart - Once Upon a Chef

Ingredients

• 1 pâte sucrée (sweet tart dough)
• 2 cups whole milk ((do not substitute low-fat or skim milk))
• ½ cup sugar
• 3 tablespoons cornstarch
• 1 large egg
• 2 large egg yolks
• 3 tablespoons unsalted butter, (cut into pieces)
• 2 teaspoons vanilla extract
• About 4 cups fresh mixed berries of choice, (plus other fruits, such as sliced kiwi or mango (see note))
• ¼ cup apricot jam