Quick & Easy Broccoli Salad

2-3 heads broccoli, cut into small pieces
1/2 purple onion cut into smal pieces
1 cup craisins
1 cup crumbled bacon
1 cup shredded cheddar cheese

Mix in bowl, then stir in the following dressing:
1 cup mayo
1/2 cup sugar
2 T. white vinegar

Refrigerate before and after serving.