01 - Cook the fettuccine pasta in a large pot of salted boiling water according to package instructions until al dente. Reserve 1/2 cup pasta cooking water, then drain and set aside.
02 - While the pasta cooks, heat 1 tablespoon olive oil in a large skillet over medium-high heat. Add the shrimp, season lightly with salt and pepper, and sauté for 2–3 minutes per side or until pink and opaque. Remove shrimp from the skillet and set aside.
03 - In the same skillet, reduce heat to medium and add 2 tablespoons butter and remaining 1 tablespoon olive oil. Add minced garlic and sauté for 30 seconds until fragrant.
04 - Pour in the heavy cream and bring to a gentle simmer. Stir in Parmesan cheese, black pepper, salt, and nutmeg. Simmer for 2–3 minutes, stirring constantly, until the sauce thickens slightly.
05 - Add the drained fettuccine to the sauce, tossing gently to coat. If the sauce is too thick, add reserved pasta water a little at a time until desired consistency is reached.
06 - Return the cooked shrimp to the pan and toss to combine. Stir in chopped parsley. Serve immediately, garnished with extra parsley and lemon wedges if desired.