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["Bring a large pot of lightly salted water to a boil. Place the farfalle (aka bow ties) into the pot, cook 8 to 10 minutes, until al dente, and drain.", "Peel Italian sausage and simmer in 24 ounces of beer for 10 minutes or until cooked through. Drain. Slice into 1/8"" slices.", "Preheat oven to 350 degrees Fahrenheit.", "Lightly grease 11 x 7 x 2-inch baking dish (or 8x8-inch pan) and set aside.", "Heat olive oil in a very large heavy skillet over moderate heat 1 minute.", "Add onion and garlic. Stir-fry until limp, about 3 minutes.", "Add mushrooms and stir-fry until juices are released and evaporate, about 5 minutes.", "Add beef and cook and stir, breaking up clumps, until no longer red, about 5 minutes.", "I usually drain the beef mixture in a fine mesh colander due to the volume of high water content onions and mushrooms.", "Off heat, mix in tomato sauce, Italian sausage slices and all but 1 cup cheese.", "Transfer to baking dish, add bow ties, and toss gently but thoroughly to mix.", "Scatter remaining 1 cup cheese on top. (Add grated parmesan cheese if more is needed.).", "Bake, uncovered, until browned and bubbling, 35-40 minutes, and serve."]