INGREDIENTS
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4 (4-ounce) boneless sirloin steaks, trimmed (about 1 inch thick)
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3/8 teaspoon black pepper, divided
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1/4 teaspoon salt, divided
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1 tablespoon olive oil
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1 (8-ounce) package sliced cremini mushrooms
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1/2 cup dry red wine
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1/2 cup water
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2 teaspoons all-purpose flour
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1 (24-ounce) package refrigerated mashed potatoes
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1/3 cup chopped chives
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1/2 teaspoon garlic powder