Split peppers in 4 sections and discard seeds and cores. Peel sections with vegetable peeler if desired. Cut into 1 inch pieces and set aside.
Put olive oil and onion in a large skillet over medium-high heat. Cook, stirring until onion turns pale gold, about 5 minutes. Add sausages; ( i use a whole packeafe of itaslian sausage from costco) cook 2 to 3 minutes. Add peppers; turning occasionally, 7 minutes. Add salt and pepper to taste stir well.
Add tomatoes reduce heat to low and cook 20 minutes. Place pasta and sauce in a serving bowl and toss. Add grated cheese and butter ( I don't use the butter). Serve with more cheese at table .
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