To prepare pickled onion, place sliced onion in a bowl with salt and sugar, let sit for 10 to 20 minutes, place in a strainer and rinse under cold water. Place in onions in bowl with vinegar, cover and refrigerate.
In a large skillet begin to prepare Gary’s QuickSteak Beef according to the package directions, after flipping the beef portions add the first 5 ingredients and sauté for and additional two to three minutes.
Pour lime juice over beef and let rest a few minutes.
Assemble the tacos in the warmed shells filling with the seasoned beef and peppers add salsa, guacamole, cheese, onions cilantro and pickled onions.
