Healthier take on loaded mashed potatoes!

- 1 head cauliflower (about 4.5-5 cups, cut into florets)
- 5 slices bacon
- 4 cloves garlic (minced)
- 1/4 cup milk
- 1 tbsp butter
- 2 tbsps reduced-fat sour cream
- black pepper
- kosher salt
- 1 bunch chives (chopped)
- 1/2 cup reduced fat cheddar cheese (shredded)