Bring a large pot of salted water to a boil. Add spaghetti and cook according to package instructions until al dente.

Drain the spaghetti and return it to the pot. Stir in marinara sauce and heat over low until warmed through.

In a mixing bowl, combine melted butter, minced garlic, and chopped parsley. Mix well.

Preheat the oven to 375°F (190°C). Cut the tops off the bread rolls and hollow out the insides to create bowls.

Brush the insides of the bread bowls with garlic butter mixture and place them on a baking sheet.

Bake in the preheated oven for about 10-12 minutes, or until golden and crispy.

Spoon the spaghetti mixture into each garlic bread bowl.

Top with grated Parmesan cheese and serve immediately.