Step 1

Add 4 cups of water and salt to a large pot; bring to a boil. Add pasta and cook according to package instructions until al dente. Drain and set aside.

Step 2

In a large saucepan, melt butter over medium heat. Add the flour and stir with a whisk until the mixture turns into a thick paste (called a roux), about 2 minutes.

Step 3

Gradually pour chicken broth over the roux and stir constantly.

Step 4

Add in the cream and stir until the sauce thickens.

Step 5

Add shredded cheese and stir until it melts. Preheat the oven to 350 degrees Fahrenheit.

Step 6

Add the pasta and mix until the shells are completely coated in sauce.

Step 7

Pour the mac and cheese into a baking dish. Bake uncovered in a preheated oven for 10 minutes or until the edges have browned.

Step 8

Remove from the oven. Let pasta cool for 10 minutes.