Preheat your grill or skillet over medium-high heat. Add a tablespoon of olive oil to the skillet if using.
In a mixing bowl, combine the ground beef, taco seasoning, salt, and pepper. Mix thoroughly and form into 4 patties.
Cook the patties on the grill or skillet for about 5-7 minutes per side or until they reach your desired doneness.
While the burgers are cooking, warm the tortillas in a separate skillet or microwave for a few seconds until pliable.
Once the burgers are done, remove them from the heat and let them rest for a couple of minutes.
Assemble the Tortilla Burgers by placing a patty on each tortilla. Top with cheese, onion, tomato, lettuce, avocado, and sour cream.
Fold the sides of the tortilla over the burger and roll it up to enclose everything in a wrap.
Serve immediately and enjoy your delicious Tortilla Burgers!