2 red bell peppers, chopped
1 sweet onion, peeled and chopped
1 cup white wine vinegar
1 cup white sugar
1 tablespoon crushed red pepper flakes
In a medium saucepan over medium heat, mix together red bell peppers, onion, white wine vinegar, sugar and crushed red pepper flakes. Bring to a boil, then reduce heat to simmer. Stirring occasionally, cook 30 minutes, or until thickened. Refrigerate 4 hours or overnight before serving.