How to Make It
Preheat the oven to 375°. Set a rack over a baking sheet. Arrange the bacon slices on the rack in a single layer. Bake for about 25 minutes, until browned and crisp. Drain on paper towels, then coarsely chop.
In a large bowl, whisk the mayonnaise with the vinegar and sugar; season with salt and pepper. Add the broccoli, raisins, onion, sunflower seeds and bacon and toss to coat evenly. Transfer the coleslaw to a serving bowl.