In a large pot, bring salted water to a rapid boil. Add the fettuccine or linguine and cook according to package directions until al dente. Before draining, reserve about 1 cup of the pasta cooking water, then drain the pasta and set aside in the pot.
In a large skillet, heat the olive oil over medium-low heat. Once hot, add the minced garlic and sauté for approximately 1 minute until it becomes fragrant, being careful not to let it burn.
Slowly pour the heavy cream into the skillet with the sautéed garlic, stirring continuously to combine. Increase the heat slightly and bring the mixture to a gentle simmer. Gradually add the grated Parmesan cheese, stirring until it melts and the sauce begins to thicken to a creamy consistency.
Mix in the lime juice, lime zest, and finely chopped cilantro into the sauce. Season with salt and freshly ground black pepper to taste. If the sauce appears too thick, gradually incorporate some reserved pasta water until you achieve your desired creamy consistency.
Add the drained pasta into the skillet containing the creamy sauce, tossing gently to ensure every strand is evenly coated. Allow it to cook together on low heat for an additional 2-3 minutes to meld the flavors.
Plate the creamy cilantro lime pasta generously in serving bowls. Garnish with extra fresh cilantro leaves and lime slices to add a pop of color and a refreshing accent.
Notes
For an elegant touch, serve the pasta in shallow bowls and sprinkle with additional grated Parmesan for an inviting look.