Italian Sausage Alfredo

Start the water heating for the pasta. Be sure to salt it well. Add the pasta when the water begins to boil and cook for the time indicated on the package.
1 pound linguine or spaghetti
In a large skillet over medium heat, add 1 tablespoon of the olive oil and saute the sausage and onion until the sausage is brown throughout. Remove to a plate lined with paper towels to drain.
1 tablespoon olive oil
8 ounces Italian sausage, 1 medium onion
To the same skillet, add the remaining olive oil and mushrooms. Sprinkle the mushrooms with salt and cook until wilted and browned.
3 tablespoons olive oil
1 pound mushrooms, ½ teaspoon salt
Return the sausage and onions to the pan with the mushrooms.
Slowly add the half and half, stirring constantly. Bring the mixture to a gentle bubble.
2 cup half and half or cream
Gradually add the Parmesan and Romano cheeses. Stir until cheese melt.
2 cup grated Parmesan cheese, 1 cup grated Romano cheese
Add the parsley and pepper.
½ cup chopped fresh parsley, ½ teaspoon black pepper
Add the cooked, lightly drained pasta to the skillet. Stir until well coated.
Taste for seasoning and add salt if needed.