Add Pasta Sauce and simmer 4 minutes, stirring occasionally. Serve sauce mixture over spaghetti squash and garnish, if desired, with grated Parmesan cheese.
Simmer uncovered for about 15 minutes. Remove from the heat and puree the sauce until it is smooth. Add the carrot, celery, onion, pepper, oregano and garlic and cook for about 6 minutes ...
Once the sauce has been cooking for 30 minutes, half-fill a large saucepan with boiling water. Add the spaghetti and cook according to the packet instructions, until al dente. When the pasta is ...