Chocolate Babka French Toast

Ingredients (11)

• 1 loaf chocolate babka, such as Mekelburg's, sliced 1-inch thick
• 5 large eggs
• 2 large egg yolks
• 2 teaspoons vanilla extract
• 1 pinch kosher salt
• 1 teaspoon granulated sugar
• 2 1/2 cups half-and-half
• 1 orange, zested, optional
• 4 tablespoons unsalted butter, divided
• 4 tablespoons oil
• Confectioners' sugar, flaky salt, butter, maple syrup, yogurt, mascarpone, additional orange zest, raspberry or orange jam, optional, for serving