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1
Cook the pasta according to the package, but reduce the cooking time by 1 minute so that they are al dente. Preheat the oven to 360u00b0 F (160u00b0 C).
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2
Meanwhile, clean the mushrooms and peel the garlic and onion. Roughly chop the mushrooms and onions. Finely dice the garlic, parsley, and chile.
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3
Heat a large frying pan over medium-high heat. Once hot, add 1 tablespoon of the olive oil, 1/2 of the onion, and the garlic. Fry for 1 minute. Add the mushrooms, chile, and salt and pepper to taste. Fry for about 5 minutes, stirring occasionally, and add 1/2 of the lemon juice and the parsley. Add more lemon juice if preferred, or discard it (or save the rest for another recipe). Remove the mushroom mixture from the pan and set aside on a plate.
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4
Add the remaining 1 teaspoon of olive oil to the pan and add the other 1/2 of the onion. Fry for 1 minute. Pour in the cream, add salt and pepper to taste, and stir occasionally. Cook for 3 minutes. (If you used milk to dilute the cream, you might want to add a bit of flour or corn starch to make the sauce a bit thicker.)
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5
Meanwhile, fill the al dente shells with the mushroom mix and place in an ovenproof dish. Pour the cream over the shells and sprinkle the Parmesan on top. Place the dish in the oven and bake for about 15 minutes, until the cheese turns golden brown. Serve with a few sprinkles of chopped parsley.
