Cut potatoes in half lengthwise. Add potatoes and broth to the Rockcrok® Dutch Oven. Microwave, covered for 11 minutes.Meanwhile, coarsely grate the cheese.Rotate the potatoes and add the cauliflower. Microwave, covered, 7–9 minutes or until potatoes are tender when pierced with a fork.Coarsely mash the potato and cauliflower mixture. Add the milk, butter, and Three Onion Rub. Microwave, covered, until hot, about 4–5 minutes.Place the sour cream in a small bowl. To temper, add 1 tbsp (15 mL) of hot soup at a time, whisking between each addition until the mixture is warm. Then add the sour cream mixture into the soup. Stir in the cheese and gently whisk until it fully melts.Top with additional cheese, bacon, and green onions if you like.
