Delicious Boston Cream Pie Croissants

Ingredients

• 1 cup light cream or half & half
• 3 egg yolks, room temperature
• 1/4 cup granulated sugar
• 1 1/2 tablespoons cornstarch
• Pinch of salt
• 2 tablespoons unsalted butter, cubed
• 1 1/2 teaspoons vanilla extract
• 3-4 store-bought croissants (5×4-inch)
• 3-4 tablespoons chopped nuts (almonds, pecans, or walnuts)
• 3 ounces semi-sweet or bittersweet chocolate bar, chopped into small chunks
• 1/4 cup half & half or light cream
• 1 tablespoon light corn syrup (optional, for sheen)