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saute prosciutto in olive oil until crisp
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remove prosciutto and saute onion and red pepper flakes
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add canned tomatoes and their juices, chopping the tomatoes in the pan
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season with salt & pepper and add back in the prosciutto
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simmer for 20 minutes
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cook pasta in boiling, salted water
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drain pasta and add to the sauce
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stir and cook for 1 minute more
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remove from the heat and add the cheese
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Serve with extra parmesan cheese on the side