Loaded Baked Potato and Cauliflower Soup

Ingredients

• 4 large slices extra-thick cut bacon
• 2 onions, chopped (about 2 cups)
• Kosher salt and freshly ground black pepper
• 2 large russet potatoes, peeled and cut into ½-inch pieces (about 5 cups)
• 1 medium head cauliflower, cut into small florets (about 6 cups)
• 8 cups (2 L) chicken stock
• Sour cream, chopped fresh chives, and grated cheddar cheese, for serving