Mix the meat, onion, parsley, egg and seasonings and form 2” meatballs, set aside.
In a rectangular oven safe dish combine the orzo, veggies, water, and seasonings. Mix them all (except for the cherry tomatoes) until evenly distributed.
Place the meatballs in the baking dish, pushing the veggies gently so the meatballs are on the bottom of the dish.
Top with the halved cherry tomatoes. Sprinkle two pinches of salt and the olive oil all over the tomatoes.
Cover with crinkled, lightly wet, parchment paper and seal with heavy duty foil.
Bake at 375 for one hour. Uncover and bake for another 10 minutes until the cherry tomatoes are charred.
Remove from the oven, sprinkle with fresh parsley and let cool for 10 minutes.