Preheat and Prepare Baking Dish

Preheat your oven to 375°F (190°C). Generously butter the bottom and sides of a 9×13-inch baking dish and place it near your work area.

Prepare Meatball Mixture

In a large mixing bowl, add the ground sirloin, chopped sweet onion, minced garlic, bread crumbs (or crushed crackers), ketchup, Worcestershire sauce, egg, Italian seasoning, sweet basil, ground oregano, brown sugar, garlic salt, seasoned salt, and seasoned pepper.

Mix the Meatball Ingredients

Using clean hands, thoroughly combine the mixture until all ingredients are evenly distributed. The consistency should be firm enough to hold shape.

Form the Meatballs

Roll the mixture into uniform 2-inch meatballs. Make sure they’re packed tightly and hold their shape. Place each meatball evenly spaced in the buttered baking dish.

Prepare the Sauce

In a separate bowl, mix the tomato sauce with Italian seasoning, sweet basil, ground oregano, brown sugar, minced garlic, garlic salt, and a few dashes of coarse ground black pepper. Stir until fully blended.

Add Sauce and Bake

Pour the prepared tomato sauce evenly over the meatballs in the baking dish, ensuring each one is well-coated.

Bake Until Golden

Place the dish in the oven and bake uncovered for 45 minutes to 1 hour. Turn the meatballs halfway through baking to ensure even browning. The sauce should be thick and rich, and the meatballs should appear golden and slightly crispy on the edges.

Serve and Enjoy

Once done, remove from the oven. Serve hot over rice, pasta, mashed potatoes, or enjoy as-is with a side salad or bread.