Where find Cooper sharp mac n cheese recipe?

* 1 pound (16 ounces) elbow macaroni

* 1/4 cup (1/2 stick) unsalted butter, melted

* 1/4 cup all-purpose flour

* 1/4 teaspoon salt

* 1/8 teaspoon black pepper

* 1/2 teaspoon dry mustard

* 2 cups milk

* 1 cup shredded sharp cheddar cheese

* 1/2 cup grated Parmesan cheese

Instructions:

1. Preheat oven to 375 degrees F (190 degrees C).

2. Cook the macaroni according to the package directions. Drain and set aside.

3. In a large bowl, whisk together the butter, flour, salt, pepper, and dry mustard.

4. Gradually whisk in the milk until the mixture is smooth.

5. Bring the sauce to a simmer over medium heat, stirring constantly. Cook for 5 minutes, or until the sauce has thickened.

6. Stir in the cheddar and Parmesan cheeses until they are melted and combined.

7. Add the cooked macaroni to the sauce and stir to coat.

8. Pour the macaroni and cheese into a greased 9x13-inch baking dish.

9. Bake in the preheated oven for 25-30 minutes, or until the macaroni and cheese is bubbly and golden brown.

10. Let stand for 5 minutes before serving.