A short, rich soup: sausage, tomato, greens, cream and a full cup of Parmesan, done on the stove in about forty-five minutes.
It is closer to a stew than a broth — the cheese and cream give it a body that needs no flour or potato.
Why This Recipe Works
- Browning the sausage first and building everything else on top of it means every later ingredient is seasoned by the meat before it is seasoned by anything else.
- Kale rather than spinach is the better choice of the two, because ten minutes of simmering leaves it with texture where spinach would collapse.
- A cup of Parmesan is a structural ingredient here, not a garnish. It emulsifies into the cream and thickens the soup as it melts.
- Diced tomatoes bring acidity that a cream-and-cheese soup badly needs. Without them this would be rich to the point of being heavy.
One Pot, Seven Additions
Nothing leaves this pot and nothing is washed. Each thing that goes in is cooking in what the last one left behind, which is the entire reason a thirty-minute soup tastes like a long one.
The fat
Warm over medium2 tbsp olive oil
Enough to start the sausage before it renders its own. From here on the pot supplies its own fat.
The sausage
Browned, and 160°F (71°C) in the thickest crumble1 lb Italian sausage, casings removed
Browned and broken up over 5 to 7 minutes. Unlike most soups this one leaves the meat in the pot, so the browned bits go straight into everything that follows.
The mirepoix
Softened, not colouredOnion, carrot, celery
Softened for about 5 minutes in the rendered sausage fat. They are seasoned by it before any liquid arrives, which is why they taste of more than themselves.
The garlic
Fragrant, about 1 minute3 cloves, minced
One minute, no more. Garlic added with the onions would be bitter by the time they were soft.
The liquid
A full boil, briefly3 cups chicken broth
Brought to a boil, which lifts everything stuck to the base of the pot into the soup.
The body
Greens wilted, 10 minutesDiced tomatoes, kale or spinach, Italian seasoning
Simmered 10 minutes with the heat reduced. Long enough for the greens to wilt and the tomato to lose its raw edge, short enough that the kale keeps some structure.
The finish
Heated through, not boiled1 cup heavy cream, 1 cup grated Parmesan
Stirred in and heated through only. A whole cup of Parmesan is a great deal of cheese and it is doing the thickening a flour roux would do in another recipe.
Then tasteSalt and pepper last, after the Parmesan. A cup of hard cheese brings a lot of salt with it, and seasoning before it goes in is how this ends up over-salted.
Ingredient Notes
- Italian sausage
- A pound, casings removed so it crumbles. Hot or mild both work — hot removes any need for extra seasoning.
- Grated Parmesan
- A full cup stirred in, plus more to serve. Grate it yourself: pre-grated carries starch that shows in a soup this cheesy.
- Kale or spinach
- Two cups chopped, and they work as equals. Kale holds up over the ten-minute simmer; spinach is better added at the very end.
- Diced tomatoes
- One cup, canned or fresh. Small in quantity and important in effect — the only acidity in the pot.
How to Make It
Heat the oil
Warm the olive oil in a large pot over medium heat.
Brown the sausage
Add the Italian sausage and cook until browned, breaking it up with a spoon, about 5 to 7 minutes.
Soften the vegetables
Add the onion, carrot and celery and cook until softened, about 5 minutes.
Add the garlic
Stir in the garlic and cook 1 minute, until fragrant.
Add the broth
Pour in the chicken broth and bring to a boil.
Simmer with tomatoes and greens
Reduce the heat and add the diced tomatoes, kale or spinach and Italian seasoning. Simmer 10 minutes, until the greens are wilted.
Finish with cream and Parmesan
Stir in the heavy cream and Parmesan and let it heat through.
Season and serve
Season with salt and pepper to taste and serve hot, garnished with extra Parmesan if you like.
Check the sausage
The sausage is done when an instant-read thermometer in the thickest crumble reads 160°F (71°C).
Success Tips
- Check 160°F in the thickest crumble before the liquid goes in.
- Do not wash the pot between stages. The browned residue is the flavour base.
- Add the cream and cheese off a hard boil. Boiling a cream soup with a cup of cheese in it will split it.
- Season at the very end, after the Parmesan.
Serving Ideas
Extra Parmesan at the table, and crusty bread. A soup this concentrated wants something plain alongside rather than another rich dish.
Storage and Reheating
Refrigerate
Refrigerate up to 3 days. It thickens considerably as it cools because of the cheese.
Freeze
Not recommended. Cream and Parmesan both separate on thawing and there is a lot of both here.
Reheat
Gently on the stove with a splash of broth, kept below a boil so the cheese stays emulsified rather than stringing.
Frequently Asked Questions
My soup went grainy. What happened?
It boiled after the cream and Parmesan went in, or the cheese was pre-grated. Both cause the same look. Keep it below a simmer once the dairy is in, and grate the Parmesan yourself.
Can I make it lighter?
Half-and-half in place of the heavy cream is the obvious change and works. Cutting the Parmesan is the one to avoid — it is providing the body, so reducing it leaves a thin soup rather than a lighter one.
How is this different from Zuppa Toscana?
No potatoes and no bacon, and it has tomato and a cup of Parmesan that Zuppa Toscana does not. They are both creamy Italian sausage soups, but this one is tomato-and-cheese led where Zuppa Toscana is potato led.
