Cook the Pasta: Bring a pot of salted water to a boil, add pasta, and cook until al dente, about 9 to 11 minutes. Reserve 1 cup of pasta water before draining.

Prepare Garlic Butter Sauce: In a skillet, heat butter over medium heat, add minced garlic, and sauté until fragrant, about 60 to 90 seconds.

Combine with Lemon: Remove skillet from heat and stir in the zest and juice of lemons, mixing well.

Emulsify Sauce: Return pasta to skillet, add half of the reserved pasta water, and toss over low heat for 1 to 2 minutes until emulsified.

Finish the Dish: Serve immediately, garnished with remaining Parmesan and pepper. Optionally add red pepper flakes or fresh herbs.