01 - Bring a large pot of salted water to a boil. Add fettuccine and cook according to package directions until al dente. Reserve 1/2 cup of pasta cooking water before draining. Set pasta aside.
02 - Heat 1 tbsp olive oil in a large skillet over medium-high heat. Season shrimp lightly with salt and pepper. Cook for 2-3 minutes per side until pink and opaque throughout. Transfer to a plate and set aside.
03 - Reduce skillet heat to medium. Add butter and remaining 1 tbsp olive oil. Sauté minced garlic for 30 seconds until fragrant, being careful not to brown.
04 - Pour in heavy cream and bring to a gentle simmer. Whisk in Parmesan cheese, black pepper, salt, and nutmeg if using. Cook for 2-3 minutes, stirring constantly, until sauce thickens slightly.
05 - Add drained fettuccine to the skillet. Toss gently to coat noodles evenly. If sauce appears too thick, incorporate reserved pasta water a tablespoon at a time until desired consistency is achieved.
06 - Return cooked shrimp to the pan and toss to combine. Sprinkle with chopped parsley. Serve immediately, garnished with additional parsley and lemon wedges if desired.