Add the heavy cream and let it simmer gently. Stir in Parmesan cheese, lemon juice, and dried basil, cooking until the sauce thickens to a creamy consistency.
Toss the cooked spaghetti into the sauce, stirring to coat every strand.
Season with salt and pepper, and finish by garnishing with fresh basil leaves.
Serve warm and enjoy the creamy, garlicky goodness!