Creating Mini Meatball Marinara Bites is straightforward when you follow these simple steps:

1. Preheat Oven: Begin by preheating your oven to 375°F (190°C).
2. Combine Ingredients: In a large bowl, mix the ground beef, breadcrumbs, Parmesan cheese, egg, minced garlic, salt, pepper, and Italian seasoning until well combined.
3. Form Meatballs: Shape the mixture into small meatballs, approximately 1 inch in diameter.
4. Bake Meatballs: Place the meatballs on a baking sheet lined with parchment paper and bake for 15-20 minutes, or until cooked through.
5. Heat Marinara Sauce: While the meatballs are baking, warm the marinara sauce in a saucepan over medium heat.
6. Combine Meatballs and Marinara: Once the meatballs are done, add them to the marinara sauce and stir gently to coat.
7. Prepare Rolls: If using mini rolls, slice them in half horizontally. If using baguette pieces, arrange them on a platter.
8. Assemble Bites: Place a meatball on each half of the roll, then spoon additional marinara sauce on top.
9. Add Cheese: Sprinkle shredded mozzarella on each meatball.
10. Bake Again: Return the bites to the oven and bake for an additional 5-10 minutes until the cheese is melted and bubbly.
11. Garnish: Remove from the oven and garnish with fresh basil, if desired.

These steps will guide you in creating these incredible bites effortlessly.