Step 1

Add all of the marinade ingredients to a bowl or shallow dish and stir. Add the steak, toss to combine, and marinate for 1 to 4 hours.

Step 2

Heat a large skillet over medium-high heat. Add the steak and cook for 3 to 4 minutes on each side. Remove the steak to a cutting board and let the steak rest for several minutes.

Step 3

While the steak is resting, heat the oil in the same skillet on medium-high heat. Add the onion and bell pepper slices and saute for 4 to 5 minutes, stirring frequently.

Step 4

When the onion and bell peppers are just about done, slice the steak into long, diagonal strips.

Step 5

Add the steak back to the skillet, and stir everything together.

Step 6

Serve immediately with tortillas and your favorite toppings, such as sour cream, pico de gallo, and avocado (or guacamole).