In a large mixing bowl, combine the ground meat, breadcrumbs, grated Parmesan cheese, egg, chopped parsley, garlic powder, onion powder, and black pepper. Mix gently until just combined.
Roll the mixture into 1-inch meatballs and arrange them on a baking sheet lined with parchment paper.
Bake the meatballs for approximately 20 minutes, or until thoroughly cooked and golden-brown.
Remove the meatballs from the oven and brush them generously with barbecue sauce. Return to the oven for an additional 5-10 minutes.
Assemble your bowls with a portion of cooked rice as the base, topped with the barbecue meatballs.
Add halved cherry tomatoes and sliced avocado on top of the meatballs.
Garnish with fresh cilantro.
Notes
For an eye-catching finish, drizzle extra barbecue sauce and include a lime wedge on the side.