Heat a large pot of water and cook pasta according to the pkg instructions to al dente. Drain and pour back into the pot.
Heat a large 12 inch skillet on medium-high heat and add I teaspoon of olive oil and the sliced hot links, cook for about 5 minutes until browned and remove to a plate.
Add the butter into the pot and toss with the pasta until melted.
Pour in the cream, milk, and sour cream and mix.
Add in the whisked eggs and spices and mix until combined.
Add in all of the shredded cheese except the sharp cheddar, and the smoked sausage. And toss to combine.
Pour the pasta back into the cast iron skillet. Sprinkle the remaining cheese on top.
Bake for 25-30 minutes or until bubbly.
Remove from the oven and let set for 10 minutes to thicken up a bit.
Notes
Don’t add the whisked eggs before the heavy cream or else the pasta may be to hot cook the eggs.If you don’t have a cast iron skillet just use a regular skillet to brown the sausages then put the mac and cheese in a 9x11 baking dish.To get a little more of a crust on the top turn on the broiler for the last 2-3 minutes, just keep an eye on it though.