In a small mixing bowl, combine the juice of 2 limes, lime zest, chopped cilantro, minced garlic, ground cumin, smoked paprika, salt, and black pepper to create a flavorful marinade.
Place the flank steak in a shallow dish or a resealable plastic bag. Pour the marinade over the steak, ensuring it is coated evenly. For enhanced flavor, let it marinate in the refrigerator for at least 30 minutes, or up to 2 hours.
Preheat your grill or grill pan over medium-high heat. After marinating, remove the steak from the marinade, allowing any excess to drip off; discard the remaining marinade.
Grill the steak for approximately 5-7 minutes on each side, or until it reaches your preferred level of doneness (medium rare is recommended for flank steak).
Once grilled, remove the steak from the heat and let it rest for 5 minutes. This resting period allows the juices to redistribute. After resting, slice the steak against the grain into thin strips for optimal tenderness.
To assemble the bowls, start by adding a generous base of cooked quinoa or rice into each serving bowl.
Top the grain base with the sliced steak, followed by an array of toppings: halved cherry tomatoes, avocado slices, corn, black beans, and finely chopped red onion.
For the finishing touches, sprinkle over additional chopped cilantro, add sliced jalapeños for a kick, and serve with lime wedges on the side for an extra zesty drizzle.
Notes
Serve the bowls individually, arranging each ingredient neatly to showcase the vibrant colors.