Creamy Potato and Cauliflower Soup

Name: Creamy Potato and Cauliflower Soup
Cook time: 30 min
Total time: 30 min
Ingredients: 1 pound cauliflower, cut into florets; 1-2 tablespoons olive oil; Kosher salt; freshly ground black pepper; 4 strips thick-cut applewood bacon; 1 cup chopped yellow onion; 5 cloves fresh garlic, minced; 1 teaspoon chopped fresh thyme (or 1/2 teaspoon dried); 2 russet potatoes (or 1 pound}, diced into 1 inch pieces; 4 medium to large yukon gold potatoes (1 pound), diced into 1 inch pieces; 4 cups lo-sodium chicken broth; 2 teaspoons kosher salt, divided; 1 bay leaf; 1-1/2 cups whole milk; 1/2 cup chopped green onions (1/4 cup finely chopped to add into the soup, 1/4 cup sliced for garnish); 1/2 cup sour cream or unsweetened nonfat Greek yogurt