Zucchini Beef Spaghetti

Ingredients

• Vegetable cooking spray
• 1 pound ultra-lean ground beef
• 2 cups sliced fresh mushrooms
• 2 cups thinly sliced zucchini
• 1 cup chopped onion
• 1/2 teaspoon salt
• 1/4 teaspoon crushed red pepper
• 4 cloves garlic, minced
• 1 (14 1/2-ounce) can no-salt-added whole tomatoes, undrained and chopped
• 1 cup water
• 1 (6-ounce) can no-salt-added tomato paste
• 1 teaspoon dried whole oregano
• 6 cups cooked spaghetti (cooked without salt or fat)
• 1/2 cup finely shredded zucchini
• 2 tablespoons grated Parmesan cheese
• Fresh oregano sprigs (optional)