Measure and stage all ingredients: pasta, shrimp, oil, butter, onions, mushrooms, garlic, diced tomatoes (draining), cream, Creole seasoning, salt, pepper, and Parmesan.
Cook the bow-tie pasta in salted water until al dente. Reserve about ¼ cup of pasta cooking liquid. Drain pasta and return it to the pot.
Peel and devein the shrimp if needed. Rinse under cold water and pat dry with paper towels.
Place shrimp in a bowl and toss with a couple of teaspoons of Creole seasoning until evenly coated.
Slice the onion into half-moon crescents. Slice the mushrooms. Chop the garlic. Measure remaining seasonings and cream.
To prepare the dish
Heat olive oil and 2 tablespoons of butter in a large skillet over medium-high heat until bubbling.
Add the sliced onions to the skillet and sauté for a couple of minutes, stirring occasionally.
Add the sliced mushrooms to the skillet. Continue sautéing until mushrooms begin to brown, about 5 minutes.
Add the garlic, remaining Creole seasoning, kosher salt, and black pepper to the skillet. Stir and sauté until fragrant, about 1 to 2 minutes.
Add the drained diced tomatoes to the skillet. Stir well and sauté for 2 to 3 minutes.
Increase the heat to high. Add the seasoned shrimp to the skillet and toss to combine.
Sauté shrimp until they just begin to turn pink, about 2 minutes.
Add the remaining 2 tablespoons of butter to the skillet and stir until melted.
Pour in the heavy cream and stir to combine. Bring the sauce to a heavy simmer.
Reduce the heat to a low simmer and allow the sauce to thicken for about 3 minutes, keeping it loose and saucy.
Add the reserved pasta cooking liquid to the cooked pasta and stir to loosen.
Add about half of the pasta to the skillet and mix until coated with sauce.
Add additional pasta gradually, stirring, until the desired sauce-to-pasta ratio is reached.
Remove skillet from heat. Taste and adjust seasoning if needed.
Serve immediately, finished with grated Parmesan or Romano cheese.
Notes
Refer to my article Creamy Shrimp Pasta with Mushrooms for FAQ, Ingredient and Substitution Notes, and step-by-step photos. Buying shrimp: If buying shrimp with shells on, purchase extra to account for shell weight. (shrimp with heads and shells, buy about 1¾ to 2 pounds to yield 1 pound of meat; shrimp without heads but still shelled, buy about 1½ pounds). Shrimp substitutes: You may substitute white meat chicken (cut into small cubes) or crawfish tails. Tomatoes: Use canned or fresh tomatoes. Drain canned tomatoes well. If using fresh tomatoes, peel, seed, and chop them before adding to the skillet. Pasta choices: Use any pasta that holds sauce. Bow-tie pasta (farfalle) works well, as does rotini, fettuccine, linguine, or tagliatelle. Cook pasta al dente so it doesn’t overcook once mixed with the sauce. Storage and reheating: Leftovers can be refrigerated in an airtight container for 3 to 4 days. Reheat gently on the stovetop or in the microwave, stirring occasionally to keep the sauce smooth. This dish can also be frozen for up to 6 months. Thaw overnight in the refrigerator before reheating, stirring as it warms to prevent the sauce from separating. Serving ideas: This pasta pairs well with a Sensation Salad and simple vegetable sides such as green beans, roasted asparagus, or squash casserole.