Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.

In a large mixing bowl, combine your Italian bread crumbs with milk and let it sit for about 5 minutes.

After the breadcrumbs have soaked, add the ground beef, finely diced onion, minced garlic, beaten egg, salt, black pepper, grated parmesan cheese, and fresh parsley to the bowl. Mix gently until just combined.

With damp hands, shape the mixture into 2-inch meatballs and place them on the prepared baking sheet.

Bake in the preheated oven for 18-20 minutes until golden brown and internal temperature reaches 165°F (74°C).

Remove from the oven and let them cool briefly before serving.