Combine all the marinade ingredients in a marinating container (glass or plastic) and season with salt and pepper to taste.
¼ cup olive oil, 4 cloves garlic, 3 tbsp. lime juice, 1 tsp. cumin, 1 tsp. chili powder, Sea salt and freshly ground black pepper
Add the flank steak, toss with the marinade until it’s completely coated, and refrigerate for at least 15 minutes and up to 2 hours.
1.5 lbs. flank steak
Preheat your grill to medium-high heat.
Remove the steak from the marinade and place it on the grill.
Grill the steak on each side for 5 to 6 minutes or until it reaches the desired doneness.
Transfer the steak to a cutting board and let it rest for 10 minutes.
In the meantime, melt some cooking fat in a skillet placed over medium-high heat.
Cooking fat
Add the onions, bell peppers, and garlic, and sauté for 5 minutes.
2 bell peppers, 3 cloves garlic, 1 onion
Add the mushrooms and cook for another 2 minutes.
8 oz. mushrooms
Add the cumin and chili powder. Season to taste with salt and pepper, cook for the last 2 minutes, and remove from the heat.
¼ tsp. cumin, ¼ tsp. chili powder, Sea salt and freshly ground black pepper
Slice the steak into thin strips.
Serve the steak with vegetables and freshly cut avocado slices.
1 avocado