Copycat Costco(R) Deli Mac and Cheese

Costco's mac and cheese that they sell in their deli section is so yummy, but they only sell it at a certain time of the year. I wanted to try to figure the recipe out so that when they don't have it, I can still make it myself. This recipe is what I came up with. It is very decadent and NOT low-cal. LOL

• Ready In: 1 hr
• Serves: 8-10

Ingredients

• 16  ounces  dry cavatappi pasta
• 1  tablespoon butter
• 1  cup butter
• 3⁄4 pint heavy cream
•  pepper
•  garlic salt
• 3⁄4 cup  grated pecorino romano cheese
• 1⁄2 cup  grated parmesan cheese
• 4  cups  shredded cheddar cheese

Directions

1. Cook cavatappi pasta according to package directions so it is al dente, drain, add 1 Tbsp of butter while still hot, and mix through; set aside to cool mostly.
2. In a large sauce pan, melt butter into cream over low heat. Add garlic salt and pepper to taste.
3. Stir in the pecorino romano and parmesan cheese over medium heat until melted; this will thicken the sauce. Remove from heat and allow to cool mostly.
4. Once both noodles and sauce are just slightly warm, stir the sauce into the noodles. Add 3 cups of cheddar cheese and mix.
5. Smooth into a 13x9x2 baking dish. Sprinkle top with the remaining cup of cheddar cheese. Bake at 350 degrees F for 30 minutes or until top starts to brown slightly.