Cook the bacon your preferred way, let it cool, then chop or crumble. Set aside.
In a small bowl, whisk together mayonnaise, Swerve, and apple cider vinegar.
Chop broccoli, cauliflower, and onion into bite-sized pieces.
Add chopped veggies, cheese, and nuts to a large salad bowl.
Pour the dressing over the salad and mix well.
Fold in the bacon or add it just before serving for extra crispiness.
Refrigerate until ready to serve.