Zuppa Toscana - Italian Soup

INGREDIENTS:

1 pound bulk mild Italian sausage
1 1/4 teaspoons crushed red pepper
flakes
4 slices bacon, cut into 1/2 inch pieces
1 large onion, diced
1 tablespoon minced garlic
5 (13.75 ounce) cans chicken broth
6 potato, thinly sliced
1 cup heavy cream
1/4 bunch fresh spinach, tough stems
removed