Preheat your oven to 400°F (205°C) or line a grill with foil for easy cleanup. Yes, we want flavor, not chaos.
In a large bowl, mix together beef, breadcrumbs, onion, egg, garlic, milk, parsley, salt, and pepper. Don’t overwork—just until combined.
Form the mixture into 1-inch meatballs. They should look put-together, not desperate.
Bake on a parchment-lined sheet for 10 minutes, or grill for about 8 minutes, turning once. You’re aiming for a light brown crust.
Brush with BBQ sauce, then bake/grill another 5–7 minutes until sticky and glossy. If you like it extra saucy, coat them again at the end.
Let rest for 2 minutes, then serve hot with extra sauce on the side. Mind the glaze—sticky fingers are part of the fun.