Grilled Cheddar Burger over Coleslaw Salad

Directions

1. 1
   Cut cabbage into halves, core and thinly slice 1/4 of the head. 
2. 2
   Transfer to a large bowl.
3. 3
   In a small bowl, whisk together mayonnaise, sour cream, cider vinegar, sugar substitute (add a pinch then add more to taste), celery seed and salt. 
4. 4
   Pour dressing over cabbage.  
5. 5
   Mix until thoroughly combined and refrigerate at least 30 minutes before serving for flavors to blend.  
6. 6
   Preheat grill or broiler.  Form ground beef into a patty and season with salt and freshly ground black pepper.  Cook until desired doneness, about 5 minutes per side.  Top with Cheddar during last minute of cooking to melt the cheese.  
7. 7
   Add avocado and tomato to the burger and serve immediately with the coleslaw.