Prep the seasoning. Make the fajitas seasoning mix and set it aside.
Prep the steak. Cut the steak into 2-inch-wide by 6-inch-long strips. Rub the steak strips with some of the prepared seasoning mix and set aside.
Cook the peppers and onions. Heat a tablespoon of olive oil in a grill pan or a skillet set over medium-high heat. Add the pepper strips and sliced onions to the hot pan; season with salt, pepper, and a sprinkle of the fajita seasoning. Cook for about 4 to 5 minutes or until tender. Remove from heat and let the veggies cool for a minute.
Make the roll-ups. Top each slice of steak with the vegetables. Then, roll them up and secure them with a toothpick.
Sear. Add the remaining olive oil to the grill pan; heat it up and add the roll-ups to the pan. Cook until browned, about 2 to 3 minutes per side. Remove from heat, remove toothpicks, and transfer to a serving plate.
Finish and serve. Squeeze lime juice over the steak fajita roll ups and garnish with chopped parsley or cilantro. Serve them with prepared guacamole.
Video
Notes
For a full meal: If preparing as a complete meal for 4, please double the entire recipe.
Season to taste: Use the seasoning mix according to your preference. I always end up using about 1-tablespoon of it for this entire dish.