In a large bowl, combine the mashed potatoes, sautéed onions/garlic, salt, eggs, chopped chick peas, diced potatoes, green onions, cilantro and flour. Once combined use a 5-ounce portion scoop, to portion out each patty on a sheet pan. Each sheet pan should fit 10 burgers. Using the back side of a spatula, flatten the tops of the burgers. Place into a 450-degree oven for 12-15 minutes or until the internal temperature reached 160 F.