Marinated Cabbage and Sweet Pepper Slaw is tangy and sweet with lots of crunch. It's fairly mild in flavor and goes great with bbq pulled pork, burgers, or grilled chicken.
Combine cabbage, peppers, celery, and onions in a large bowl.
In a small saucepan, bring sugar, vinegar, oil, salt, pepper, celery seeds, and red pepper flakes to a boil. Stir until sugar is melted and then pour over cabbage mixture.
Stir well, cover with plastic wrap, and refrigerate for at least 8 hours.