INGREDIENTS
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1 large head celery root, peeled, halved, and cut into 1/4-inch wedges
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2 large carrots, thinly sliced
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1 tablespoon olive oil
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2 boneless rib eyes (1 pound each; 1 1/4 inches thick), excess fat trimmed
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Salt and pepper
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1 tablespoon unsalted butter, room temperature
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2 teaspoons prepared horseradish
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1 teaspoon Dijon mustard
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1/4 cup sliced fresh chives