Tomato-Cream Sauce for Pasta

In a saucepan, saute onion and garlic in olive oil over medium heat. Make sure it doesn't burn. Add tomatoes, basil, sugar, oregano, salt and pepper. Bring to boil and continue to boil 5 minutes or until most of the liquid evaporates. Remove from heat; stir in whipping cream and butter. Reduce heat and simmer 5 more minutes.