Cook quinoa according to package directions. Allow to cool.
Combine cooked quinoa, salt, cumin, cheese, tomatoes, onion, cilantro, lime juice, bread crumbs and eggs together in a bowl. Use your hands to mix well. Once everything is well combined, use your hands to form the mixture into 6 patties. Place in the refrigerator to chill for at least 30 minutes. This will allow them to firm up.
When you are ready to cook, heat a thin layer of oil in a skillet over medium heat. Cook patties 5 - 7 minutes on each side or until the outside is golden brown and the patties are cooked through (since there is egg in them).
Toast buns if desired.
To assemble a burger, place lettuce on bottom bun, top with quinoa burger and spoon guacamole on top, top with top bun. Repeat with remaining ingredients. Serve.
Note: These patties are also great sans bun with a spoonful of guacamole on top. But if I tried to serve Ryan a meal that didn't have meat or a bun and called it a burger he would just laugh at me. :) Enjoy!