Method

1. Cut tomatoes in half and squeeze out seeds. Place in food processor and roughly chop.
2. Melt 3 Tbsp of butter in a large cause pan over medium heat. Cook onion and garlic until soft, about 7 minutes. Add tomatoes, salt, and pepper. Simmer uncovered 20-30 minutes (until thickened). Stir in remaining butter, basil or parsley and remove from heat.