3 iron steak spinach Recipes

flat iron steak, salt and ground black pepper to taste, olive oil, red onion, thinly sliced, italian salad dressing, red bell peppers , cut into 1/2 inch strips, portobello mushrooms, sliced, red wine, baby spinach leaves, crumbled blue cheese

sandwich rolls, partially split, softened butter, garlic powder, vegetable oil, cut flat iron steaks, fresh spinach leaves, tomato, sliced, avocado, sliced, thick slices fresh mozzarella cheese, balsamic vinegar, for drizzling