Keto Zuppa Toscana Soup - a copycat version of the Olive Garden soup that is perfect for a chilly night. Made with sausage, bacon, cauliflower and kale...it's a hearty soup that is perfect for dinner.
Cook the Italian sausage and red pepper flakes in a Dutch oven (or large pot with a lid) over medium-high heat until crumbly, browned, and no longer pink, 10 to 15 minutes. Drain, remove from pan, and set aside. The purpose of removing the sausage is so that you aren't boiling it in broth.
Add the bacon and cook until crispy. Remove from pan.
Pour the chicken broth into the Dutch oven with the onion mixture; bring to a boil over high heat. Add the cauliflower, and boil until fork tender, about 15 minutes. Reduce the heat to medium and stir in the heavy cream and the cooked sausage; heat through. Mix the spinach and bacon into the soup a couple of minutes before serving. If you want a thicker soup, sprinkle the xanthan gum over the soup and quickly whisk in to combine and simmer until thickened. You can top with grated Parmesan if desired.
You can control the thickness of the soup by the amount of cauliflower you put in it. The original soup isn't extremely thick but is chunky.