Preheat the oven to 400 F and line a large baking sheet with parchment paper.
To make the meatloaf, combine the beef, pork, almond flour, ground flax, milk, sauce, coconut sugar, balsamic vinegar, and seasonings. Mix until fully combined and set aside.
Add the vegetables to the sheet pan and top with oil and season. Toss to coat, and leave space for the meatloves on the baking sheet.
Take a handful of the meatloaf mixture and form it into a mini meatloaf. Add to the baking sheet and repeat for all of the meatloaf mixture. You should have about 7-8 mini meatloaves.
Add a spoonful of tomato sauce to the top of each meatloaf and transfer to the oven. Bake for 30 minutes or until the vegetables are tender and the meatloaves are cooked through. Add shredded cheese to the meatloaves if desired and cook for another 5 minutes.
Remove from the oven and top with fresh parsley to serve.