This one pot Alfredo skips draining pasta water entirely. The pasta cooks directly in a mixture of broth and cream, absorbing all that liquid as it cooks. The starch released from the pasta thickens the sauce naturally, and you end up with a creamy, rich result and fewer dishes to wash.
One Pot Alfredo Sauce
Pasta and Alfredo sauce cooked together in a single pot, with the pasta absorbing the cream as it cooks.
Ingredients
- 12 ounces dried fettuccine or linguine
- 3 cups chicken broth or water
- 1 cup heavy cream
- 3 cloves garlic, minced
- 1/2 teaspoon salt
- 1/4 cup unsalted butter
- 1 1/2 cups Parmesan cheese, grated
- 1/4 teaspoon black pepper
- 1 tablespoon chopped fresh parsley
Instructions
- Add the pasta, broth, cream, garlic, and salt to a large, wide pot or deep skillet.
- Bring to a boil over medium high heat, stirring often so the pasta does not stick.
- Reduce to a strong simmer and cook, stirring frequently, for 10 to 12 minutes until the pasta is al dente and most of the liquid has been absorbed.
- Reduce heat to low. Add the butter and stir until melted.
- Add the Parmesan a handful at a time, stirring until smooth and creamy.
- Season with pepper, top with parsley, and serve right away directly from the pot.
Notes
Stir the pasta frequently, especially at the start. It will stick to the bottom of the pot if left alone while the liquid is still high.
The sauce will look slightly thin when the pasta is done cooking. It thickens quickly once you stir in the butter and Parmesan.
Why This Method Works
When pasta cooks in a small amount of liquid rather than a large pot of boiling water, it releases much more starch into that liquid. That starch is what naturally thickens the sauce without needing extra cream, a roux, or any other thickener. The technique comes from the same principle behind the original authentic Italian Alfredo sauce, where pasta water does a lot of the sauce work.
The Importance of Stirring
This recipe needs more attention than a standard two pot approach. Stir the pasta every 1 to 2 minutes while it cooks to prevent sticking and to distribute the starch evenly through the liquid. Once the liquid is mostly absorbed, you can stir a bit less often, but stay close to the stove.
Common Mistakes to Avoid
- Using too much liquid at the start. You want the pasta to absorb most of it as it cooks, not have a lot left over at the end.
- Not stirring enough in the first few minutes. The pasta will stick and clump if left alone.
- Adding the cheese while the heat is still high. Lower it to the minimum before the Parmesan goes in.
Related Recipes
For a more traditional two pot approach with a richer sauce, see our homemade Alfredo sauce recipe. For the full details on how pasta water affects a cream sauce, the Alfredo sauce for fettuccine page covers the pasta and sauce ratio in depth.
Storage
The pasta will continue absorbing sauce as it sits, so leftovers will be thicker than the freshly made version. Reheat with a splash of broth or cream to loosen.