Creating Spaghetti Garlic Bread is a breeze if you follow these simple steps:

1. Preheat Your Oven: Preheat your oven to 375°F (190°C).
2. Prepare the Bread: Slice the loaf of bread in half lengthwise. Place the halves on a baking sheet, cut side up.
3. Make the Garlic Butter: In a small bowl, mix the softened butter, minced garlic, parsley, salt, pepper, and red pepper flakes until well combined.
4. Spread the Mixture: Evenly spread the garlic butter mixture over the cut sides of the bread halves.
5. Add Cheese: If using, sprinkle the grated Parmesan cheese on top of the garlic butter.
6. Bake the Bread: Place the baking sheet in the preheated oven and bake for 15-20 minutes, or until the bread is golden and crispy.
7. Slice and Serve: Remove from the oven and let cool slightly. Slice into pieces and serve warm alongside your spaghetti.

These easy-to-follow steps will guide you in creating this incredible garlic bread effortlessly.