Prepare grill for medium-high heat.
In a large bowl, mix together ground beef, onions, garlic, sauces, seasonings, egg and crushed tortilla chips. Using hands, shape ground beef mixture into four equal hamburger patties.
Cook burgers on prepared grill for 4-5 minutes per side or until cooked through (160°F for beef, 165°F for turkey).
Serve on hamburger buns, topped as desired with guacamole, lettuce and tomato.