In a large bowl, combine ground beef, breadcrumbs, grated Parmesan cheese, minced garlic, egg, chopped parsley, salt, and black pepper. Mix until just combined.

Form the Meatballs

Using your hands, form the mixture into meatballs, about 1 inch in diameter. Place them on a baking sheet lined with parchment paper.

Cook the Meatballs

Heat olive oil in a skillet over medium heat. Add the meatballs and cook until browned on all sides, about 8-10 minutes. Remove from heat and set aside.

Parmesan Garlic Bread

Prepare the Garlic Butter

In a small bowl, mix softened butter, garlic powder, chopped parsley, and grated Parmesan cheese until well combined.

Toast the Bread

Slice the baguette or slider rolls in half. Spread the garlic butter mixture on each half and place them on a baking sheet.

Bake the Bread

Preheat the oven to 375°F (190°C) and bake the bread for about 10-12 minutes, or until golden and crispy.

Pomodoro Sauce

Sauté the Vegetables

In a saucepan, heat olive oil over medium heat. Add diced onion and minced garlic, sauté until translucent, about 3-4 minutes.

Make the Sauce

Add crushed tomatoes, fresh basil, salt, black pepper, and sugar to the saucepan. Stir and let simmer for 15-20 minutes to develop flavors.

Assembly

Assemble the Sliders

On each Parmesan garlic bread half, place a cooked meatball and spoon some pomodoro sauce over it. Top with the other half of the bread.

Serve

Serve the meatball sliders immediately while it's warm. Enjoy!