In a large bowl, combine the mashed potatoes, sauteed 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° oven for 12-15 minutes or until the internal temperature reaches 160°F.