This easy gluten-free fettuccine alfredo is perfectly rich and creamy! It’s easy to make with just 6 simple ingredients, and no one would guess it’s gluten-free!
I love fettuccine alfredo and I was excited to make it when we had some friends visiting. My friend Annie is gluten-free so I wanted to make a dish we could all enjoy. It took a little tweaking to figure out how to adapt a traditional fettuccine alfredo recipe and keep it gluten-free but this worked perfectly! This is now in our regular dinner rotation and I know you’ll love it!
Ingredients & Substitutions
- Salted butter: Unsalted works too, just bump the salt up a pinch at the end. In a pinch, olive oil will do, but you’ll lose some of that rich flavor.
- Garlic: Fresh really is best here, but ½ teaspoon of garlic powder works if that’s what you’ve got. Skip the jarred stuff if you can (it tends to taste a little flat).
- Heavy whipping cream: This is what makes the sauce silky, so I’d stick with it. Half and half will work but the sauce will be thinner, so let it simmer a minute or two longer. Full-fat canned coconut milk is the best dairy-free swap.
- Parmesan cheese: Grate it yourself if you can, since the pre-shredded kind has anti-caking agents that keep it from melting smoothly. Pecorino Romano is a great swap, just go a little lighter on the salt since it’s saltier.
- Black pepper: Freshly cracked if you have it.
- Salt: Parmesan is already salty, so taste before adding more.
- Reserved pasta water: Don’t skip this! The starch helps the sauce cling to the pasta. If you forgot to save some, a splash of warm water or broth works.
How to Make Gluten-Free Fettuccine Alfredo
Variations & Additions
- Chicken Alfredo: Add 2 cups of cooked, sliced or shredded chicken.
- Shrimp Alfredo: Sauté 1 pound of peeled and deveined shrimp in butter until cooked through, then toss with the finished pasta.
- Broccoli Alfredo: Add steamed broccoli to the finished pasta for an easy vegetable addition.
- Spinach Alfredo: Stir a few handfuls of fresh spinach into the hot Alfredo sauce and cook until wilted.
- Spicy Alfredo: Add ¼ teaspoon red pepper flakes along with the black pepper.
- Vegetarian Alfredo: The base recipe is vegetarian as written. For a strictly vegetarian version, use Parmesan made without animal rennet.
- Plant-Based Alfredo: Use plant-based butter, plant-based heavy cream, and a suitable dairy-free Parmesan alternative. The texture and flavor will vary from the original recipe.
Easy Gluten-Free Fettuccine Alfredo
- Total Time: 25 minutes
- Yield: 4 servings 1x
- Diet: Gluten-Free
Description
This easy gluten-free fettuccine alfredo is perfectly rich and creamy! It’s easy to make with just 5 simple ingredients and no one would guess it’s gluten free!
Ingredients
For the pasta:
- 12 oz gluten-free fettuccine
- Salt for the pasta water
For the sauce:
- 4 tablespoons salted butter
- 2 cloves garlic, finely minced
- 1 cup heavy whipping cream
- 1 cup freshly grated Parmesan cheese
- ¼ teaspoon black pepper
- ¼ teaspoon salt, or to taste
- 2–4 tablespoons reserved pasta water, as needed
Instructions
1. Bring a large pot of generously salted water to a boil. Cook the gluten-free fettuccine according to the package directions until al dente. Before draining, reserve ½ cup of the pasta water. Drain the pasta and set aside. Do not rinse.
2. While the pasta cooks, melt the butter in a large skillet over medium-low heat. Add the minced garlic and cook for 30-60 seconds, just until fragrant. Do not allow the garlic to brown.
3. Pour in the heavy cream and bring it to a gentle simmer. Cook for 3-4 minutes, stirring occasionally.
4. Reduce the heat to low. Gradually add the freshly grated Parmesan, whisking continuously until the cheese has melted and the sauce is smooth.
5. Add the black pepper and taste before adding salt. The salted butter and Parmesan may provide enough salt on their own.
6. Add the cooked fettuccine directly to the skillet. Using tongs, gently toss the pasta until it is completely coated in the Alfredo sauce.
TIP: If the sauce is too thick, add the reserved pasta water 1 tablespoon at a time, tossing after each addition, until the sauce reaches your desired consistency.
7. Serve immediately with additional Parmesan and freshly cracked black pepper. Add fresh parsley, if desired.
Notes
Use freshly grated Parmesan. It melts more smoothly and gives the sauce a better texture.
Keep the heat low when adding Parmesan. High heat can cause the cheese and cream to separate.
Don’t skip the reserved pasta water. You may not need all of it, but having it available makes it easy to adjust the sauce.
Serve immediately. Alfredo sauce is at its creamiest when freshly made.
- Prep Time: 5 minutes
- Cook Time: 20 minutes
- Category: Dinner
- Method: Oven
- Cuisine: American
How to Store Leftovers
Store leftover Fettuccine Alfredo in an airtight container in the refrigerator for up to 3 days. The sauce may look separated or slightly oily after refrigeration. This is normal and does not mean Alfredo has gone bad. The butter, cream, and Parmesan naturally separate as the sauce cools.
How to Reheat Leftover Fettuccine Alfredo
For the best results, reheat Alfredo gently over low heat.
- Place the leftover pasta in a skillet over low heat.
- Add 1-2 tablespoons of milk, heavy cream, or water per serving.
- Toss frequently with tongs as the pasta warms.
- If the sauce still looks separated or too thick, add another small splash of liquid.
- Continue tossing gently until the sauce becomes creamy again.
Avoid high heat or boiling. This can cause the butter and cream to separate even further.
Frequently Asked Questions
- Why did my Alfredo sauce separate after being refrigerated? This is normal. Butter, cream, and Parmesan can separate as the sauce cools and solidifies. Gentle reheating with a small amount of added liquid will help bring the sauce back together.
- How do I keep Alfredo sauce from separating? Avoid boiling the sauce, especially after adding the Parmesan. Keep the heat low and add the cheese gradually. For leftovers, reheat slowly rather than using high heat.
- Why should I save pasta water? Pasta water helps loosen the Alfredo sauce without making it watery. It also helps the sauce cling to the pasta.
- Can I use pre-shredded Parmesan? You can, but freshly grated Parmesan is recommended. It melts more smoothly and creates a creamier sauce.
- Can I make the Alfredo sauce ahead of time? It’s best made immediately before serving. Alfredo sauce thickens considerably as it cools and is easiest to work with while freshly made.
- Can I double the recipe? Yes. Double all ingredients and use a large skillet or Dutch oven with enough room to comfortably toss the pasta and sauce together.
- Can I freeze Fettuccine Alfredo? Freezing is not recommended. The cream-based sauce can become grainy or separate significantly after thawing. For the best texture, enjoy it fresh or refrigerate leftovers for up to 3 days.
- What can I serve with Fettuccine Alfredo? A simple green salad, roasted or steamed vegetables, broccoli, asparagus, or gluten-free garlic bread all pair well with Alfredo.
Other Pasta Recipes
If you enjoy this pasta recipe, try my vegetarian stir fried pasta, butternut squash pasta, or this cottage cheese Alfredo sauce!
