Fettuccine is the traditional pairing for Alfredo sauce, and getting the ratio right makes a real difference. This page covers the exact amount of sauce for a pound of fettuccine, plus the technique that helps the sauce coat every noodle instead of sliding off.
Alfredo Sauce for Fettuccine
A classic Alfredo sauce sized and timed specifically for tossing with fettuccine noodles.
Ingredients
- 1 pound dried fettuccine
- 1/2 cup unsalted butter (1 stick)
- 2 cups heavy cream
- 3 cloves garlic, minced
- 2 cups Parmesan cheese, grated
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1/2 cup reserved pasta water
Instructions
- Bring a large pot of well salted water to a boil. Cook the fettuccine until just shy of al dente, about 1 minute less than the package directs.
- Reserve 1/2 cup of the pasta water, then drain the rest.
- While the pasta cooks, melt the butter in a large skillet over medium heat.
- Add the garlic and cook for 1 minute, until fragrant.
- Pour in the heavy cream and simmer for 3 to 4 minutes, until slightly thickened.
- Lower the heat and whisk in the Parmesan a handful at a time, until smooth.
- Season with salt and pepper.
- Add the drained fettuccine directly to the sauce and toss with tongs over low heat for 1 to 2 minutes, until every noodle is coated.
- Add a splash of the reserved pasta water if the sauce gets too thick, then serve right away.
Notes
This recipe uses a 1 pound to 4 cup ratio of pasta to sauce, which is the standard amount for fettuccine. For thinner noodles like spaghetti, you can usually use a bit less sauce.
Finishing the noodles in the sauce, rather than just pouring sauce over plated pasta, is what helps the sauce cling to every strand instead of pooling at the bottom of the bowl.
Why Fettuccine and Alfredo Sauce Work Together
Fettuccine is a wide, flat noodle, which gives it more surface area than something like spaghetti. That extra surface area is exactly what a thick cream sauce needs to cling to. Thinner noodles tend to get overwhelmed by a sauce this rich, while wider noodles like pappardelle can work but are less traditional.
Getting the Ratio Right
This recipe uses 1 pound of fettuccine to about 4 cups of finished sauce, which is a generous, well coated result. If you prefer a lighter coating, you can stretch this same amount of sauce across 1.25 to 1.5 pounds of pasta.
The Technique That Makes the Difference
Instead of cooking the pasta, draining it, plating it, and pouring sauce on top, finish the noodles directly in the sauce over low heat for the last minute or two. Tossing them together this way, with a splash of starchy pasta water if needed, helps the sauce grip the noodles instead of just sitting on top of them.
Pairing With Protein
This base recipe pairs well with chicken or shrimp if you want to turn it into a full dinner. Both of those pages use this same fettuccine ratio as their starting point.
Storage
Store leftovers in a sealed container in the fridge for up to 3 days. Pasta will keep absorbing sauce as it sits, so leftovers may look like they need extra sauce or a splash of milk when reheated.
Common Mistakes to Avoid
- Cooking the pasta all the way to al dente before draining. It needs to finish cooking in the sauce, so pull it about a minute early.
- Rinsing the cooked pasta. This removes the starch that helps the sauce stick to every strand.
- Forgetting to save pasta water. It is the easiest way to fix a sauce that turns out too thick once the noodles are tossed in.
Adjusting for a Smaller or Larger Batch
| Servings | Fettuccine | Sauce Recipe |
|---|---|---|
| 2 | 8 oz | Half batch |
| 4 (this recipe) | 1 lb | Full batch |
| 8 | 2 lb | Double batch |
When scaling up, use a pot large enough for the cream to simmer without crowding, and plan on a few extra minutes for the cream to come back up to a simmer after doubling the volume.