Flat-Iron Steak - Smothered in Mushrooms & Onions

Flat-Iron Steak - Smothered in Mushrooms & Onions

Serves 4.        Prep time 10         Cook time   115 minutes Ingredients 4 6 oz. boneless flat-iron steaks Salt and freshly ground black pepper to taste 1/2 cup all-purpose flour 2 tablespoons extra-virgin olive oil 2  tablespoon unsalted butter 1 lb. baby Bella mushrooms, thickly sliced 1 large yellow onion, sliced ¼” thick 1½ teaspoons dried thyme,…