Easy Mushroom Barley Soup Recipe

Ingredients

• 1 tablespoon olive oil
• 1 cup sliced fresh mushrooms
• 1/2 cup chopped carrot
• 1/3 cup chopped onion
• 2 cups water
• 3/4 cup quick-cooking barley
• 2 tablespoons all-purpose flour
• 3 cups whole milk
• 1-1/2 teaspoons salt
• 1/2 teaspoon pepper
• Chopped fresh parsley, optional