Step 1

Position oven rack about 3 inches from heat source; preheat broiler to high. Coat a broiler-safe pan with cooking spray.

Step 2

Sprinkle steak with cumin, 1/2 teaspoon salt and pepper. Place on the prepared pan and broil, turning once, until an instant-read thermometer inserted in the thickest part registers 125 degrees -130 degrees F for medium-rare, 3 to 6 minutes per side. Let rest for 5 minutes. Thinly slice across the grain, then chop into bite-size pieces.

Step 3

Meanwhile, whisk sour cream, oil, vinegar, chipotles to taste and the remaining 1/4 teaspoon salt in a large bowl. Transfer 4 tablespoons of the dressing to a small bowl. Add romaine, corn and avocado to the large bowl; toss to coat. Divide the salad and tomato wedges among 4 plates. Top each with cheese, the chopped steak and 1 tablespoon of the reserved dressing.