Zuppa Toscana Soup (Low Carb - Ketofied)

1 quart chicken broth

1 pound Italian sausage

1/2 large onion

1/2 pound bacon cooked and chopped

3 cups chopped cauliflower or frozen cauliflower rice

1 cup chopped kale

1/2-3/4 cup heavy cream

1 Tablespoon red pepper flakes

Salt and pepper to taste