INGREDIENTS
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3 tablespoons red wine vinegar, divided
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2 teaspoons extra-virgin olive oil, divided
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1 teaspoon black pepper, divided
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5/8 teaspoon salt, divided
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1 (1-pound) flank steak, trimmed
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Cooking spray
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1 1/2 cups thinly sliced radishes
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1 English cucumber, halved lengthwise, peeled, and cut into 1/4-inch-thick slices
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1 (5-ounce) package prewashed mâche (about 8 cups)
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1/4 cup (1 ounce) crumbled blue cheese