Directions

1. Heat broiler, with rack set 4 inches from heat. In a small bowl, whisk together lime juice, vinegar, oils, red-pepper flakes, and garlic.
2. Pierce steak all over with a fork; place in a shallow dish or resealable plastic bag. Pour soy sauce and half of lime-juice mixture over steak (reserve remaining half for dressing), and marinate at room temperature, 10 minutes (or up to overnight in the refrigerator).
3. Spray a baking sheet with cooking spray. Lift steak from marinade (discard marinade), and place on baking sheet. Broil, without turning, until medium-rare, 8 to 10 minutes. Let rest 5 minutes. Slice thinly on the diagonal, across the grain.
4. In a large bowl, toss cabbage and cucumber with reserved dressing; divide among four plates. Top salad with steak and peanuts.