1-Preheat and prepare: Start by preheating your oven to 400°F (200°C) and lining a baking sheet with foil, then spray it with non-stick cooking spray to make cleanup a breeze.

2-Mix ingredients: In a large bowl, mix together the ground beef, beaten egg, breadcrumbs, grated Parmesan cheese, finely chopped onion, minced garlic, kosher salt, ground black pepper, and optional parsley until just combined remember, over-mixing can make them tough, so keep it light.

3-Shape meatballs: Next, use a medium scoop or spoon to shape the mixture into meatballs about 1 1/2 inches (about 3.8 cm) in diameter, and place them on the prepared baking sheet.

4-Bake meatballs: Bake them uncovered for 17 to 20 minutes, flipping halfway through to ensure even cooking and to avoid any burning.

5-Serve: Once they’re no longer pink inside and fully cooked, you can serve them right away try simmering in marinara sauce for 10 minutes and pairing with cooked noodles, or keep it simple with a garnish of extra Parmesan cheese and fresh herbs for a quick, tasty meal.

6-Optional adjustment: If the mixture feels too dry, add 1 tablespoon of milk to keep things moist. This method not only saves time but also makes for a healthier option with less fat compared to frying.