2 medium russet potatoes, washed and dried
1 small head of cauliflower  (3 1/2 cups or 16 ounces), stem removed cut into florets
1 1/2 cups fat free chicken broth
1 1/2 cups 1% reduced-fat milk
salt and freshly cracked black pepper
1/2 cup light sour cream
10 tbsp reduced-fat shredded sharp cheddar cheese
6 tbsp chopped chives, divided
3 slices bacon, cooked and crumbled (you can use turkey bacon if you prefer)