Cheesy Pasta Pie | Mama's Cooking

Ingredients

• 1 (14.1-ounce, 2-count) package refrigerated pie crust, second pie crust reserved for another use
• 8 ounces large elbow macaroni
• 3 tablespoons unsalted butter
• 3 thyme sprigs, plus more, whole leaves, to taste, for garnish
• 1/3 cup all-purpose flour
• 1 1/2 cups whole milk
• 2 teaspoons Dijon mustard
• 1/2 teaspoon black pepper
• 1/4 teaspoon kosher salt
• 4 ounces Gruyère cheese, shredded
• 2 ounces extra-sharp white cheddar cheese, shredded
• 2 ounces fontina cheese, shredded