Kings Flat Iron Steak Sandwich

By Jackie B

4.18 / 5

20min

15min

See on AllRecipes

4 sandwich rolls partially split
4 teaspoons softened butter
2 teaspoons garlic powder
2 tablespoons vegetable oil
4 (4 ounce) thinly-cut flat iron steaks
½ cup fresh spinach leaves
1 tomato sliced
1 avocado sliced
8 thick slices fresh mozzarella cheese
2 teaspoons balsamic vinegar for drizzling