Step 1

Cook the pasta according to package directions. Editor's Tip: Salting your pasta water enhances the flavor of the pasta

Step 2

Meanwhile, saute the mushrooms and onions in olive oil in a large skillet until they're tender. Add the garlic and cook for one minute longer.

Step 3

Add the shrimp, broth and seasonings. Bring the sauce to a boil. Reduce the heat, then cook and stir for four to five minutes or until the sauce is slightly thickened and the shrimp turn pink. Editor's Tip: The key to thoroughly cooking—but not overcooking—shrimp is keeping an eye on their color and shape. Just-cooked shrimp should turn pink and curl into a C shape. If they curl into a tight O shape, they're overcooked. Remove them from the heat when you see the former.

Step 4

Stir in the plum tomatoes, 1/4 cup of cheese and the butter. Drain the pasta and toss it with the shrimp mixture. Sprinkle with the remaining cheese. Editor's Tip: If the sauce feels a little thick, a splash of reserved pasta water can help loosen it. A squeeze of fresh lemon juice right before serving brightens everything up.