Spicy Chicken Alfredo Sauce is a smooth homemade Alfredo sauce and the perfect base for tangy slices of spicy pepperoncinis, caramelized onions, simmered mushrooms and tender, diced chicken. There's no heavy cream in the sauce and it tastes like something you'd enjoy in a fancy restaurant. This is a delicious and easy-to-make dish that is perfect for a family dinner or a date night at home.

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Ingredients to Have on Hand
- Chicken breasts
- Half and half
- Mushrooms
- Pepperoncinis
- Parmesan cheese
- Butter
- Cream cheese
You Control the Spiciness
This spicy Alfredo sauce can be less, or more spicy depending on how many pepperoncinis pepper slices you add.
One cup of sliced pepperoncinis gives the sauce a tangy "bite" but the sauce is so creamy, thanks to butter and cream cheese, it's still mild enough even for kids.
My family loves a spicy Alfredo sauce so sometimes we add extra slices of those juicy pepperoncinis on each serving.
Not feeling in a spicy mood? Leave the pepperoncinis out or swap them for sliced red or green peppers instead.
Who doesn't love a good, creamy pasta dish? A few tablespoons of cream cheese make a big difference in this smooth, spicy Alfredo sauce.
This is a classic Italian dish, simply spiced up with caramelized onions, mushrooms and pepperoncinis peppers.
Spicy Chicken Alfredo Sauce will soon become a fast family favorite!
Ready in About an Hour
Although the end result is impressive and full of flavor, and may remind you of a tasty Alfredo sauce from a restaurant - this is an easy recipe to make in about an hour.
Step-by-Step Instructions
Dice the onions and mushrooms, then toss them in the pan with the hot olive oil.
While the diced ingredients are cooking and carmelizing in the oil, dice the uncooked chicken and shred the Parmesan cheese.
From start to finish, your delicious spicy Alfredo sauce is ready in about an hour.
Use One Skillet
Everything for Spicy Chicken Alfredo Sauce cooks in the same pan. Well, almost everything. The pasta will need to cook in a large stock pot of boiling water of course. But each step of this recipe uses just one large pan, pot or skillet.
I cook it in the biggest skillet I own because the sauce and ingredients need plenty of room to simmer together. But a Dutch Oven such as Le Creuset will work great too.
Top Tips and FAQ
I highly recommend it. Sweet onions are milder than other varieties like white or yellow onions and they caramelize beautifully in the hot butter with the sliced mushrooms. Here's a great article in Bon Appetite about the differences between onion varieties.
You can, and it will taste fine but the Alfredo sauce will not be nearly as creamy. I totally understand the desire to cut down on calories or fat which is why I use half and half instead of heavy cream, which most Alfredo sauces call for.
Pasta Options
Any shape pasta will work great with this recipe, but fettuccine is the most common pasta variety to serve with an Alfredo sauce and that's what I like to use.
The thickness of the fettunccine holds the creamy Alfredo sauce better than a thin spaghetti.
Stir and Thicken the Sauce
The spicy Alfredo sauce thickens as it cooks on the stovetop so don't worry if the sauce seems a little thin at first.
This Alfredo Sauce is proof you don't need heavy cream to make a silky, creamy Alfredo sauce.
Watch the video below to see how thick my sauce was right after I mixed in the chicken and pepperoncinis.
After simmering for about 15 minutes the sauce will be creamy and perfect.
How to Serve
Cook your pasta according the package directions and drain.
Place a serving of the cooked pasta in a pasta bowl or on a plate.
Top with plenty of Spicy Chicken Alfredo Sauce and garnish with additional freshly grated parmesan cheese.
Storage
Store the leftover Spicy Alfredo Sauce separate from the pasta.
Place in a covered bowl or sealed container in the refrigerator, the sauce sometimes thickens a little after being refrigerated so just add a little milk when you warm it to create the consistency of when it's served hot from the stove.
Leftovers will stay fresh for 4 -5 days in the refrigerator.
More Pasta Recipes
Cooking with pasta is a great way to share delicious comfort food with family and friends. Here are a few more pasta-centric recipes I think you'll enjoy.
More Recipes and Toppings
Wondering what to serve with pasta? Here are a few more ideas:
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Julie says
This spicy chicken Alfredo is perfect for my family weekend lunch. I love the spicy ness of the chicken with the creamy Alfredo sauce. thank you!
Keri says
This spicy chicken alfredo is such a great recipe. I have always loved the creaminess of Alfredo sauce, but it's a bit bland for me. I love it now that I can spice it up. Thanks for the great recipe!
Melinda O'Malley Keckler says
That's what I love about this recipe too Keri, it has just the right amount of "kick."
Andréa Janssen says
Yummie, this chicken Alfredo was so delicious. The whole family loved it! Thank you for sharing.
Rob says
This chicken Alfredo is such a delicious dinner. And my guests even said that the sauce was like what they have at great restaurants! Great recipe.
Melinda O'Malley Keckler says
I love hearing that! Thank you Rob.
Gloria says
I love the fact the alfredo has a bit of a kick. The perfect pasta dinner for date night. Great with a glass of white wine.
Mama Maggie's Kitchen says
Oh my word! I need this in my life.
Erin Gierhart says
I LOVE the caramelized onions in this pasta! Great flavor!