Cheesy Mac

I'll be the first to profess my undying love for Kraft but this is on a whole other level.

4 cups cooked elbow macaroni (I leave mine slightly undercooked)
2 cups grated Cheddar
3 eggs beaten
1/2 cup sour cream
4 tablespoons butter, cubed
1/2 teaspoon salt
1 cup milk

Preheat oven to 350. While macaroni is still hot add the cheddar. In a separate bowl combine remaining ingredients. Add to macaroni mixture. Pour in casserole dish and bake 30-45 minutes.