Instructions: Set a large pot of water to boil for pasta. Put oil in a 10 inch skillet and turn heat to medium; a minute later, add onion. Cook, stirring occasionally, until onion softens, about 5 minutes. Add sausage in bits and turn heat to medium high. Cook, stirring infrequently, until sausage is nicely browned, 5-10 minutes.

Add milk and tomato paste, along with salt and pepper; stir and simmer about 5 minutes, or until thickened but not dry. Keep warm if necessary and, if it becomes too thick, add a little more milk, water or chicken stock.

Meanwhile, salt the pot of water and cook pasta. When pasta is tender but not mushy, drain it. Toss with sauce and Parmesan, taste, adjust seasoning and serve.

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