Preheat oven to 400 degrees F and line rimmed baking sheet with unbleached parchment paper. Add bacon strips and bake for 20 minutes or until crispy. After transfer bacon on double folded paper towel to drain.
In the meanwhile, in a large salad bowl add yogurt, mayo, mustard, apple cider vinegar, salt and pepper. Whisk to combine and set aside.
Chop broccoli florets into bite-sized pieces and add to the bowl with the dressing. Also add red onion, sunflower seeds, dried cranberries and cheese.
Crumble or chop bacon, add to the salad bowl, stir and let broccoli salad sit. While you can serve broccoli salad right away, I prefer to let flavors "marry each other" in the fridge for about 30 minutes - 2 hours.
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Notes
Store: Refrigerate leftovers for up to 3 days.
Make ahead: Combine all broccoli salad ingredients, except seeds and bacon, and do not stir. Cover and refrigerate for up to 3 days. Store seeds in a dry place and bacon in the fridge, and add before serving.
Broccoli for broccoli salad is usually raw, no need to cook or steam it.
Dried cranberries: Unsweetened dried cranberries are a healthier choice but they are not always available in supermarkets. Use regular ones but maybe less.
Yogurt and mayo: Plain regular or Greek yogurt with at least 2% fat content is the best. If using Greek yogurt and dressing is too thick, add a few tablespoons of water. Feel free to use less or omit mayo. I like avocado oil mayo.