Step 1

Press the sauté button on an electric pressure cooker. Add the turkey and brown the meat, using a wooden spoon to break it into small pieces as it cooks, 4 to 5 minutes. Drain the meat and transfer it to a small bowl.

Step 2

In the pressure cooker (still on sauté), melt the butter. Add the onion, carrots, celery, and garlic. Cook, stirring, until softened, about 5 minutes. Add the flour, salt, and pepper to taste and cook, stirring, for 1 minute to cook the flour. Return the turkey to the pressure cooker and add the chicken broth, potatoes, and cauliflower and stir.

Step 3

Seal and cook on high pressure for 10 minutes, until the potatoes are soft. Quick release, then open when the pressure subsides.

Step 4

Transfer the cauliflower and 1 cup of the liquid to a blender and blend until smooth. Pour the puree into the soup and stir well. Add the cheddar and stir until melted. Serve topped with the scallions.

Step 5

To make this in a large pot or Dutch oven, sauté over medium-high heat in steps 1 and For step 3, bring to a boil, then cook, covered, over low heat until the potatoes and cauliflower are tender, 25 to 30 minutes. Transfer 1 cup of the liquid and the whole cauliflower to the blender, and blend until smooth. Stir the puree into the soup, add the cheddar, and serve topped with the scallions.