Apple Butternut Soup

Ingredients Vegetable Cooking Spray 1 tablespoon reduced-calorie margarine 1 cup chopped onion 1 clove garlic, minced 1 tablespoon all-purpose flour 1 (10 1/2 ounce) can low-sodium chicken broth 3 cups peeled, seeded, and cubed butternut squash 1 1/3 cups peeled, cored, and coarsely chopped cooking apple 1/4 teaspoon dried whole thyme 1/8 teaspoon salt 1/2