In a saucepan mix the sauce ingredients (excluding the cornstarch and water). Bring to a boil, lower the heat and continue to simmer stirring occasionaly while you complete the recipe. It should end up reduced to about half. Once reduced stir in the cornstarch mixed with the water. Cook until thickened and set aside.
Brown the ground beef, drain, and stir in the Fiesta Restaurante seasoning mix and 1/2 cup water and simmer for 5 minutes.
Divide the meat evenly on the tortillas (1/3 of the way down the tortilla) do the same with the cheese.
Roll the tortilla (starting at the end with the meat/cheese) after rolling once, fold in the ends and finish rolling. To hold it together you may need to use toothpicks or a flour and water mixture to seal them.
Fry until golden brown.
Serve with sauce over the top, garnish with a dollop of sour cream and sliced green onions. I usually serve this with some shredded lettuce and diced tomatoes or refried beans.