1-First Step: Prepare all ingredients by finely chopping the parsley, garlic, and onion. Measure out the ground beef and other components. For vegan or gluten-free options, prepare chosen substitutes.

2-Second Step: In a large mixing bowl, combine the ground beef with parsley, garlic, onion, breadcrumbs, and Parmesan cheese. Mix gently until all ingredients are incorporated without overworking the meat.

3-Third Step: Form the mixture into evenly sized meatballs, about the size of a walnut, ensuring uniform cooking. For plant-based versions, shape the mixture according to ingredient consistency.

4-Fourth Step: Thread meatballs carefully onto skewers, leaving a small gap between each for even heat exposure. If using wooden skewers, soak them in water for 30 minutes prior to grilling.

5-Fifth Step: Preheat grill or oven to 400°F (200°C). Brush skewers lightly with olive oil to prevent sticking and enhance flavor.

6-Sixth Step: Cook skewers for 12-15 minutes, turning occasionally until meatballs are browned and cooked through. For vegan or lean protein options, adjust cooking time accordingly.

7-Final Step: Remove skewers from heat and let rest for 5 minutes. Serve warm with your choice of sauce and garnishes, adapting to dietary preferences as desired.