Roasted Red Pepper Pasta

Posted on December 3, 2025

Modified: December 3, 2025

By Sofia
A vibrant bowl of Roasted Red Pepper Pasta garnished with fresh parsley and grated cheese, with chili flakes and forks nearby.

There’s a special magic that happens when you roast vegetables. They transform, becoming sweeter and infinitely more complex. That magic is the heart of this Creamy Roasted Red Pepper Pasta. I remember the first time I blended the smoky, sweet peppers into a velvety sauce; the aroma was intoxicating. It’s a dish that feels incredibly gourmet but is secretly simple, much like another of my cozy favorites, this comforting tuna pasta bake. This delicious Roasted Red Pepper Pasta has been a staple ever since.

What Makes This Roasted Red Pepper Pasta So Special?

What I adore most is how this recipe delivers luxurious flavor with minimal effort. With just 15 minutes of prep and 30 minutes of cooking, I can create a stunning meal. The raw cashews blend into an impossibly creamy base without any dairy, while the roasted peppers, onion, and garlic provide a deep, savory sweetness. It’s my go-to for a quick weeknight dinner that feels like a weekend treat. This Roasted Red Pepper Pasta always impresses.

Ingredient Notes for Roasted Red Pepper Pasta

For the best flavor, I always choose firm, bright red bell peppers. Their sweetness is key. Raw, unsalted cashews are my secret to the perfect cream sauce. It’s a different vibe from the briny capers in a pasta puttanesca, but just as bold and delicious.

roasted red pepper pasta recipe
Roasted Red Pepper Pasta 5
A vibrant bowl of Roasted Red Pepper Pasta garnished with fresh parsley and grated cheese, with chili flakes and forks nearby.
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Creamy Roasted Red Pepper Pasta

A vibrant and decadent pasta dish featuring a velvety, smoky sauce made from scratch with roasted red bell peppers, garlic, and creamy cashews. This easy-to-make recipe is a perfect weeknight meal that feels gourmet.
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 4 servings
Course: Dinner, Lunch, Main Course
Cuisine: American, Italian-inspired
Calories: 560

Ingredients
  

For the Roasted Red Pepper Sauce
  • 3 large red bell peppers halved and seeded
  • 1/2 large yellow onion cut into wedges
  • 4 cloves garlic unpeeled
  • 2 tbsp olive oil divided
  • 1/2 cup raw cashews soaked in hot water for at least 30 minutes, then drained
  • 1/4 cup nutritional yeast
  • 1 tbsp lemon juice freshly squeezed
  • 1/2 cup vegetable broth plus more if needed
  • 1 tsp smoked paprika
  • 1/2 tsp salt or to taste
  • 1/4 tsp black pepper freshly ground
For the Pasta Assembly
  • 12 oz rigatoni or penne pasta
  • 1/4 cup fresh basil chopped, for garnish
  • 1/4 tsp red pepper flakes optional, for garnish
  • Vegan parmesan or regular Parmesan cheese for serving

Equipment

  • High-Speed Blender or Food Processor
  • Large pot
  • Baking Sheet
  • Large Skillet

Method
 

Roast the Vegetables
  • Preheat your oven to 425°F (220°C).
  • On a large baking sheet, place the red pepper halves (skin-side up), onion wedges, and unpeeled garlic cloves. Drizzle with 1 tablespoon of olive oil and toss to coat.
  • Roast for 20-25 minutes, or until the peppers are soft and the skins are blistered and charred in spots.
  • Remove from the oven and let cool slightly. Once cool enough to handle, peel the skins off the bell peppers and squeeze the roasted garlic from its peel. Discard the skins.
Cook the Pasta
  • While the vegetables are roasting, bring a large pot of heavily salted water to a boil. Cook the pasta according to package directions until al dente.
  • Before draining, reserve about 1 cup of the starchy pasta water. Drain the pasta and set aside.
Blend the Sauce
  • In a high-speed blender, combine the roasted peppers, roasted onion, roasted garlic, drained cashews, nutritional yeast, lemon juice, 1/2 cup vegetable broth, smoked paprika, salt, and pepper.
  • Blend on high speed for 1-2 minutes until the sauce is completely smooth and creamy. If the sauce is too thick, add a little more vegetable broth to reach your desired consistency.
Assemble and Serve
  • Pour the blended red pepper sauce into a large skillet or the now-empty pasta pot and warm over medium heat for 2-3 minutes, stirring occasionally.
  • Add the cooked pasta to the skillet with the sauce. Toss well to coat every piece of pasta.
  • Stir in about 1/2 cup of the reserved pasta water to thin the sauce to your desired consistency. The starch in the water helps the sauce cling to the pasta beautifully.
  • Serve immediately, garnished with fresh chopped basil, a sprinkle of red pepper flakes (if using), and a generous grating of Parmesan cheese.

Notes

  • Cashew Soaking: For a truly creamy sauce, don't skip soaking the cashews. If you're short on time, you can boil them for 10 minutes instead of soaking.
  • Time Saver: To save time, you can use a 12-ounce jar of roasted red peppers (drained) instead of roasting them from scratch. Simply sauté the onion and garlic until soft before adding them to the blender with the jarred peppers and other sauce ingredients.
  • Storage: Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. The sauce may thicken upon cooling; simply add a splash of water or broth when reheating.
  • Spice it Up: For a spicier sauce, add 1/2 tsp of red pepper flakes directly into the blender with the other sauce ingredients.

How I Make Roasted Red Pepper Pasta

I start by roasting the bell peppers, onion, and garlic until they’re tender and slightly caramelized—this is where flavor builds. While they roast, I cook the pasta. Then, everything goes into the blender with cashews, nutritional yeast, and broth. I blend it into a silky sauce. It’s a simple process, like the classic spaghetti aglio e olio. Finally, I toss the sauce with the pasta, and it’s ready to serve.

roasted red pepper pasta pinterest figure>

My Tips for the Perfect Outcome

  • Reserve Pasta Water: Before draining, save a cup of the starchy water. It’s perfect for thinning the sauce to your desired consistency.
  • Roast Well: Don’t rush roasting; good caramelization on the vegetables equals deeper flavor.
  • Blend Thoroughly: Let the blender run until the sauce is completely smooth.

How I Serve and Store This Dish

My favorite way to serve this dish is with a generous sprinkle of fresh basil, a pinch of red pepper flakes, and some vegan Parmesan. It adds so much freshness. Leftovers are fantastic! I store the sauced pasta in an airtight container in the refrigerator for up to 3 days. Reheat gently on the stovetop, adding a splash of water or broth to loosen the sauce as needed.

FAQs

Can I make this pasta without cashews?

Absolutely. For a nut-free version, you can substitute the raw cashews with sunflower seeds or a cup of full-fat coconut milk from a can. The texture will be slightly different, but it will still create a wonderfully creamy sauce for your Roasted Red Pepper Pasta. Just be sure to blend it until it’s completely smooth.

Can I use jarred roasted red peppers instead?

Yes, in a pinch, you can use jarred roasted red peppers to save time. You’ll need about two 12-ounce jars, drained. While you’ll miss the flavor from roasting the onion and garlic alongside the peppers, it’s a great shortcut for making this Roasted Red Pepper Pasta on a very busy night.

Is this Roasted Red Pepper Pasta spicy?

This recipe is not spicy on its own; it’s more sweet and savory. The heat level is entirely up to you! I suggest adding red pepper flakes as a garnish when serving. This allows everyone to customize the spice to their own preference, making it a perfect dish that the whole family can enjoy.

What type of pasta is best for this sauce?

I love using rigatoni or penne because their tube shape and ridges are perfect for catching every bit of the thick, creamy sauce. However, this Roasted Red Pepper Pasta sauce is incredibly versatile and works beautifully with almost any pasta shape you have on hand, from spaghetti and linguine to fusilli.

Conclusion

This recipe holds a special place in my heart, and I truly hope it brings as much joy to your table as it does to mine. If you try it, I’d absolutely love to hear what you think and see your creations in the comments below!

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