Garlic and Cheese Popovers

Name: Garlic and Cheese Popovers
Ingredients: 1/2 cup (1 stick) unsalted butter, at room temperature; 2 tablespoons anchovy paste; 1 tablespoon chopped chives; 1 1/2 teaspoons fresh lemon juice; 1/2 teaspoon lemon zest; Kosher salt and freshly ground black pepper, optional; Vegetable oil cooking spray; 6 large eggs, at room temperature; 5 cloves garlic, minced; 2 cups whole milk, at room temperature; 1 1/4 cups (3 ounces) finely grated Asiago cheese; 1/4 cup (1-ounce) shredded sharp Provolone cheese; 1 1/2 cups all-purpose flour; 2 teaspoons kosher salt; 1/2 teaspoon freshly ground black pepper; 1/4 cup chopped flat-leaf parsley