Making Garlic Butter Pasta is straightforward and rewarding. Follow these simple steps to create this delightful dish:

1. Cook Pasta: In a large pot of boiling salted water, cook the spaghetti according to package instructions until al dente. Drain and set aside, reserving about 1/2 cup of pasta water.
2. Melt Butter: In a large skillet over medium heat, melt the unsalted butter.
3. Sauté Garlic: Add the minced garlic to the skillet and sauté for 1-2 minutes until fragrant, being careful not to burn it.
4. Add Red Pepper Flakes: If using, stir in the red pepper flakes for an extra kick of flavor.
5. Combine Pasta and Sauce: Add the cooked spaghetti to the skillet and toss to coat in the garlic butter sauce.
6. Adjust Consistency: If the pasta seems dry, gradually add reserved pasta water until you reach your desired consistency.
7. Season: Season with salt and freshly ground black pepper to taste.
8. Add Cheese: Remove the skillet from heat and stir in the grated Parmesan cheese until well combined.
9. Garnish: Serve immediately, garnished with chopped fresh parsley for added color and flavor.

These steps will guide you effortlessly through the process of making Garlic Butter Pasta.