Roasted red pepper pesto is a fabulous, flavourful, contemporary Italian pesto recipe that is perfect with pasta, bruschetta, and even white meat or fish. It also makes a great dip!

History
Red peppers are very popular in Italy, and I’m totally addicted to roasting them and then using them in all kinds of recipes, such as soups, omelets, quiches, and pasta sauces! Roasting the peppers really brings out the flavor and is so much healthier than frying them. Using red peppers in pesto has become quite popular here in Italy.
Some people make roasted red pepper pesto with the addition of ricotta or sun-dried tomatoes. I used walnuts, but you can also find this pesto made with almonds and pine nuts. There are also Italian recipes for red pepper pesto made with uncooked peppers. However, I think I prefer them roasted.
Apart from the roasted peppers, I used some basil leaves, grated Parmigiano cheese, extra virgin olive oil and walnuts for this roasted red pepper pesto. The resulting sauce was so delicious! And it's so easy to make!!
Ingredients
Pasta: I used casarecce from Valle del Grano, which is a Sicilian brand known for its quality. This is actually one of my Sicilian hubby's favorite pasta brands. Additionally to dried casarecce, homemade casarecce, fusilli, penne, or even gnocchi also make excellent substitutes and pair beautifully with the roasted red pepper pesto.
Red Bell Peppers: Choose firm, bright-colored peppers for the best flavor.
Walnuts: These nuts add a rich, earthy base to the pesto. If walnuts are unavailable, almonds or pine nuts can be used as alternatives.
Basil Leaves: Add a fresh and herby flavor that complements the sweetness of the peppers in the pesto.
Parmigiano Reggiano: Adds a rich salty and umami depth to the pesto. For a vegetarian version, look for Parmesan cheese that specifies it's made without animal rennet.
Garlic: A little goes a long way; one to two cloves is just enough to infuse the pesto with its characteristic sharpness without overwhelming the other ingredients.
Extra Virgin Olive Oil: Choose a high-quality extra virgin olive oil for the best flavor.
Expert Tips
Perfecting Roasted Peppers: To get the best flavor out of your red bell peppers, roast them until the skins blister and start to blacken. This process not only makes the skins easier to peel but also intensifies the peppers' natural sweetness and adds a slightly smoky flavor, which is key for a roasted pepper pesto.
Blending for Texture: When making the pesto, aim for a slightly robust texture, which will enhance the mouthfeel. Pulse the ingredients in stages, checking the consistency as you go, to avoid overprocessing.
Step by Step Instructions
1) Preheat the oven to 180°C (355°F).
2) Place the cleaned red bell peppers on a baking tray lined with parchment paper. Drizzle lightly with olive oil and roast in the preheated oven for 20-25 minutes, or until the skins begin to blacken and blister.
3) Remove from the oven and allow to cool slightly.
Tip: Place the peppers in a plastic food bag for 15 minutes to make peeling easier.
4) Peel the skin of the red peppers and cut into pieces.
5) In a blender, combine the walnuts and garlic. Pulse until the pieces are finely chopped. Add the roasted pepper pieces, basil leaves, half of the grated Parmigiano Reggiano cheese, and a drizzle of olive oil. Pulse again until the mixture is evenly blended but retains some texture. If the pesto seems too dry, add a little more olive oil. Season with salt and black pepper to taste. Now your red pepper pesto is ready!
6) Fill a large pot with water and bring to a boil. Add salt to the water and bring it to a boil again. Cook the pasta until al dente, according to the package instructions. Reserve a cup of the pasta cooking water, then drain the pasta and return it to the pot.
7) Add the roasted red pepper pesto to the cooked pasta. If the mixture seems too dry, add a bit of the reserved pasta cooking water to achieve the desired consistency. Mix well.
8) Serve the pasta immediately, topped with additional grated Parmigiano Reggiano cheese and chopped fresh parsley.
Storage and Leftovers
For the Roasted Red Pepper Pesto Only:
Refrigeration: Transfer the freshly made pesto to an airtight container and store it in the refrigerator. Properly stored, the pesto will remain fresh for up to 5 days.
Freezing: To freeze pesto for longer-term storage, spoon it into a freezer bag, expel as much air as possible before sealing, and lay it flat in the freezer. Pesto stored this way can be kept for up to three months. Thaw in the refrigerator overnight before use.
Storing the Pesto with Pasta:
Storage: Allow any leftover pesto pasta to cool to room temperature before storing. Transfer the cooled pasta to an airtight container and store it in the refrigerator. It can be kept for up to 3 days.
Reheating: For reheating, place the pasta in a microwave-safe container and cover it. Heat on medium power for two minutes, then stir to distribute the heat evenly. Continue heating in 30-60 second intervals, stirring between each, until the pasta is thoroughly heated.
Alternatively, the pasta and pesto can be enjoyed cold from the refrigerator.
FAQs
While they are hot, place them in a sealed plastic bag or cover them with plastic wrap for about 15 minutes. The steam helps loosen the skin, making it easier to peel off with your fingers or a small knife.
If the pesto is too thick, you can thin it by adding more olive oil until you reach the desired consistency. If it's too thin, pulse in more grated Parmesan or nuts to thicken it.
This pesto can be made vegetarian by substituting the Parmigiano Reggiano with a vegetarian-friendly cheese alternative that does not use animal rennet. Traditional Italian Parmigiano Reggiano is made with animal rennet, which is not suitable for vegetarians.
You can also put this roasted red pepper pesto on pizza, eat it on bread and add a little to grilled, baked or fried fish before serving! Alternatively, it can be used to fill pasta such as cannelloni if you add some ricotta to give it more bulk and of course you can eat it with other types of pasta.
More recipes with sweet peppers to try:
If you do try this roasted pepper pesto recipe, I’d love to hear what you think. Please write a comment here on the blog or post a comment on the Pasta Project Facebook page.
Your feedback means a lot to me!
Buon Appetito!
This recipe was originally published in 2017 but has been updated with new photos and text.
Pin for Later:
If you are interested in learning how to make homemade pasta and different types of gnocchi, check out my shop page for some great video online courses from my friends in Rome! Nothing beats learning to make pasta from Italians! Plus while you’re there why not order a copy of my autumn/winter pasta recipes cookbook!?
Aleta says
Homemade red pepper pesto? This is amazing! I have never seen casarecce pasta, what other pasta would you recommend in its place?
The Pasta Project says
Hi Aleta, as noted above casarecce is not a rule! Fusilli are great too or tagliatelle and even gnocchi!
Emily says
This red pepper pesto sauce is amazing! Unique and full of flavor and just a great weeknight meal!
The Pasta Project says
Thank you, Emily!
Alexis says
This dish looks delicious! I'll have to add this to our meal plan this week.
The Pasta Project says
Thank you, Alexis! Let us know if you try it!
Jere Cassidy says
I have seen this pasta before but have not tried it, next time I am getting a bag to try. Love the idea of a red pepper pesto.
The Pasta Project says
Hi Jere, hope you grab a bag and try it! It is delicious!
Candice says
Such a delicious pasta... so delicious, it's going in the regular rotation! And we already can't wait to make it again. Genius idea to use a jar of red peppers... it's so quick and easy!
The Pasta Project says
Thank you, Candice! Glad you love it!
Erika says
This is my all time favorite sauce for pasta. So delicious!
The Pasta Project says
Thank you, Erika! It really is delicious!
Amanda says
I always want new pasta dishes and this one looks so simple and flavorful. Thanks for sharing!
The Pasta Project says
It definitely is delicious and simple - hope you love it!
Ramona says
Roasted pepper pesto is the best taste in this whole world and so it’s this recipe - was to die for and my kids were sad to see it’s over - I will have to make it again. I have some pepper pesto left over. Thank you so much for sharing - superb and has become our favourite pasta dish now 😉
The Pasta Project says
Thank you, Ramona! I am glad it was a big hit with the family!
Leslie says
I'm a huge fan of red peppers and I think this recipe would be just fabulous! I love learning about Italian food! It's my favorite!
The Pasta Project says
Thank you, Leslie! I love learning about food too, and obviously it tastes delicious!
Kelly Anthony says
This cassarecce roasted red pepper pesto looks so comforting and will a dish that everyone will love at my house.
The Pasta Project says
Thank you, Kelly. It's a great recipe for the cooler weather. Hope you try it and love it!
Neli Howard says
Such a comforting meal, and it looks so delicious and easy to make!
The Pasta Project says
Thank you, Neli! Simple and delicious is the best combination!
Stine Mari says
This roasted red pepper pesto reminds me of muhammara, the Syrian pepper and walnuts dip. I love muhammara, so I know this recipe is perfect for me!
The Pasta Project says
That sounds delicious! I will look a recipe up!
Bernice Hill says
Casarecce is one of my favourite pasta shapes too...it's so great for holding onto sauce. I will definitely keep an eye open for that brand of pasta, we have a really great Italian Centre here that brings in all sorts of delicious Italian treats!
The Pasta Project says
Mine too Bernice! It's great that you have a place to go for good Italian ingredients!
Debbie says
Red Pepper Pesto sounds out of this world! I always love to read your post. You explain so much about Italian food I never knew. I love hearty pasta dish and this sounds fabulous.
The Pasta Project says
Thank you, Debbie. I love the history and tradition almost as much as I love the food!
Paula Montenegro says
I can't wait to try this recipe! I completely agree with the shape being important. This red pepper pesto is delicious and will become a part of my weeknight meals!
The Pasta Project says
Thank you, Paula. You can't go wrong with this on the menu!
Toni says
This is really amazing! Everyone at my house loved it!
The Pasta Project says
I am so pleased to hear that, Toni! It's such a good recipe to have in your rotation!
Sara says
I've never made red pepper pesto homemade before and I was surprised how easy it was! So yummy!!
The Pasta Project says
It's surprisingly easy, isn't it! Glad you loved it!
Pam says
This is a family favorite!! I use the pesto on sandwiches too!
The Pasta Project says
Yes, it's so tasty on a nice chunk of bread!
Noelle says
The perfect pasta dish! Love all the flavors, thank you!
The Pasta Project says
Thank you, Noelle 🙂
Veena Azmanov says
This is delicious and I love the walnut crunch too. Awesome Dinner for sure. My family loves it.
The Pasta Project says
Thank you, Veena!