Heat oil in a Dutch oven over medium-high heat. Add onion, ginger, and garlic to pan; sauté 5 minutes. Add 1 cup Vegetable Stock, soy sauce, curry paste, and salt. Stir in carrot; cook 2 minutes. Add bell pepper, tomatoes, zucchini, squash, and mushrooms; cook 2 minutes, stirring occasionally. Stir in remaining 3 cups stock and spinach; bring to a boil. Reduce heat, and simmer 5 minutes or until carrot is tender, stirring occasionally. Serve over noodles.