Mushroom Barley Soup Done Right

Name: Mushroom Barley Soup Done Right
Cook time: 2 h
Total time: 2 h
Cuisine: American
Ingredients: 3 large carrots, peeled, cut into large chunks; 2 parsnips, peeled, cut into large chunks; 2 tablespoons oil; 2 onions, diced small; 5 garlic cloves, minced or 5 cubes Gefen Frozen Garlic; 1 knob celery root, finely diced; 2 small zucchini, finely diced; 1 small yellow squash, finely diced; 7 celery stalks, sliced; 10 ounces white button mushrooms, sliced; 10 ounces baby bella mushrooms, sliced; 1/2 cup barley, such as Glicks Pearl Barley, rinsed; 2 teaspoons salt; 1/4 teaspoon pepper; 1/2 teaspoon paprika; 1/2 teaspoon garlic powder; 2 tablespoons flour; 1 (15-ounce) can Gefen Tomato Sauce (see Note)