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Red Pepper Cashew Alfredo Pasta Recipe

If you’re anything like me and crave a creamy, comforting pasta dish without the heaviness of traditional cream sauces, then this Red Pepper Cashew Alfredo Pasta Recipe is going to become your new best friend. I absolutely love how this sauce is silky smooth, packed with flavor, and surprisingly easy to whip up. Plus, it’s vegan-friendly and versatile, so you’ll find it’s perfect for weeknight dinners or impressing guests without the fuss.

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Why You’ll Love This Recipe

  • Deliciously Creamy: The cashews create a rich, velvety texture that feels indulgent without any dairy.
  • Vibrant Flavor: Roasted red peppers add a subtle sweetness and gorgeous color that brightens up your plate.
  • Simple & Quick: You can have this sauce ready in about 10 minutes once your nuts are soaked—perfect for busy nights.
  • Flexible & Nourishing: Easily customize with your favorite pasta, veggies, or beans for a meal that suits your style.

Ingredients You’ll Need

The magic of this Red Pepper Cashew Alfredo Pasta Recipe lies in its simple yet thoughtfully paired ingredients. Each component contributes to a sauce that’s creamy, flavorful, and satisfying. When shopping, pick a fresh red bell pepper or grab a jar of good-quality roasted peppers to save time without sacrificing taste.

Flat lay of a fresh whole red bell pepper, a small white ceramic bowl filled with raw cashew nuts, a small white ceramic bowl of water, a small white ceramic bowl of nutritional yeast flakes, a small white ceramic bowl of salt crystals, a small white ceramic bowl of golden onion powder, a small white ceramic bowl of bright yellow ground turmeric, a small white ceramic bowl with a tiny amount of finely ground nutmeg, and a nest of uncooked spaghetti pasta arranged symmetrically, all placed on a clean white marble surface, soft natural light, photo taken with an iPhone, professional food photography style, fresh ingredients, white ceramic bowls, no bottles, no duplicates, no utensils, no packaging --ar 2:3 --v 7 --p m7354615311229779997 - Red Pepper Cashew Alfredo Pasta, vegan creamy pasta, vegan Alfredo sauce, roasted red pepper pasta, dairy-free Alfredo recipe
  • Red bell pepper: Fresh or roasted, it gives the sauce a sweet, smoky depth and striking color.
  • Raw cashews or macadamia nuts: These soak up water to create that luscious creamy base.
  • Water: Helps blend the nuts into a smooth sauce; don’t skip this for the perfect texture.
  • Nutritional yeast or Parmesan cheese: Nutritional yeast keeps it vegan with a cheesy note, while Parmesan adds richness if you prefer dairy.
  • Salt: Key to balancing and enhancing all the flavors.
  • Onion powder: Adds subtle savoriness without chopping fresh onions.
  • Ground turmeric: Just a pinch for warmth and a gentle golden hue.
  • Ground nutmeg (optional): A tiny dash brings a cozy, almost nutty undertone.
  • Pasta, spaghetti squash, or vegetables: The canvas for your sauce—choose your favorite base.
  • Optional grilled or roasted veggies, beans: Great for adding texture, nutrients, and filling up your meal.
Note: You’ll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Variations

I love how adaptable this Red Pepper Cashew Alfredo Pasta Recipe is — once you master the base, you can truly make it your own. You might like it with a little more heat, or loaded with veggies—whatever makes your heart (and stomach) happiest.

  • Spicy Kick: Add a pinch of red pepper flakes or smoked paprika for a subtle heat that livens things up; I discovered this trick when I wanted something with a bit more personality.
  • Herb Boost: Stir in fresh basil or parsley at the end to brighten the sauce and add a fresh pop—my family goes crazy for this twist.
  • Protein Power: Toss in roasted chickpeas or grilled chicken for a heartier meal; a great way to stretch leftovers creatively.
  • Low-Carb Option: Swap pasta with spiralized zucchini or spaghetti squash for a lighter, veggie-packed dish I’ve made many times in summer.

How to Make Red Pepper Cashew Alfredo Pasta Recipe

Step 1: Soak Your Nuts for Creaminess

The first—and possibly most important—secret to that smooth, creamy sauce is soaking your cashews or macadamia nuts. Cover them with water and let them sit ideally for 6-8 hours, or overnight if possible. This softens the nuts so your blender can work its magic without any gritty texture. I once tried skipping this step, and let me tell you, the sauce wasn’t nearly as silky.

Step 2: Blend Up Your Sauce

Once your nuts are soaked, drain and pat them dry to avoid watering down the sauce. Then, combine them in a blender or food processor with the red bell pepper (either fresh or roasted), water, nutritional yeast or Parmesan, salt, onion powder, turmeric, and nutmeg if you’re using it. Blend it on high until the sauce is perfectly smooth and creamy—this usually takes about 1 to 2 minutes depending on your equipment. Don’t rush this; scraping down the sides a couple times helps get everything emulsified nicely.

Step 3: Cook Pasta and Warm Sauce

While your sauce is resting, cook your pasta according to package directions—salting the water well helps elevate the flavor. I like to keep my pasta firm to al dente because the sauce clings beautifully to it. When it’s ready, drain, but don’t rinse; you want that surface starch to help the sauce stick. Pour the sauce into a pot and warm it gently on low heat just until heated through—don’t let it boil, or it might thicken too much or separate.

Step 4: Toss, Taste, and Serve

Combine the pasta and sauce in a big bowl or back in the pot, stirring gently to coat every strand. Now’s the time to taste and adjust—maybe you want a touch more salt or pepper or a squeeze of lemon juice to brighten things up. If you’re adding roasted veggies, beans, or greens, fold them in here. My family especially loves when I sneak in sautéed mushrooms and spinach—they add such great texture and nutrients.

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Pro Tips for Making Red Pepper Cashew Alfredo Pasta Recipe

  • Soaking Time is Key: Always soak your nuts overnight if you can—it transforms the texture and flavor of the sauce.
  • Use Roasted Red Peppers: I’ve found roasted peppers gives the sauce a smoky sweetness that fresh peppers can’t match.
  • Don’t Overheat the Sauce: Warm gently rather than boiling to keep that creamy consistency.
  • Season Incrementally: Add salt and spices little by little and taste often to avoid an overpowering sauce.

How to Serve Red Pepper Cashew Alfredo Pasta Recipe

Red Pepper Cashew Alfredo Pasta Recipe - Serving

Garnishes

I always finish this pasta with a sprinkle of freshly chopped parsley and some cracked black pepper — they add a nice burst of color and freshness. If you’re not vegan, a few shavings of Parmesan go incredibly well here, too. Toasted pine nuts or crushed red pepper flakes can be fun additions depending on your mood.

Side Dishes

This pasta pairs beautifully with simple sides like a crisp green salad dressed with lemon, garlic bread for soaking up extra sauce, or roasted asparagus for a seasonal touch. At home, my go-to is usually steamed broccoli tossed with lemon zest and olive oil—keeps the whole meal light but satisfying.

Creative Ways to Present

For a dinner party, I like serving the pasta straight on large plates and topping each with some colorful roasted cherry tomatoes or fresh microgreens. You can also stuff these sauces inside baked pasta shells or even drizzle over roasted cauliflower steaks for a creative twist I recently tried and loved.

Make Ahead and Storage

Storing Leftovers

I store any leftovers in an airtight container in the fridge for up to 3 days. The sauce thickens a bit overnight, so before reheating, I just stir in a splash of water or plant-based milk to loosen it up and keep that creamy texture.

Freezing

If you want to freeze the sauce, I recommend doing that separately from the pasta. Freeze it in small containers for up to 2 months. When ready to use, thaw overnight in the fridge and reheat gently, adding a little water if it seems too thick.

Reheating

The best way I’ve found to reheat leftovers is on the stovetop over low heat while stirring frequently. Adding a splash of water or broth helps revive the sauce’s creaminess and prevents it from becoming gluey or dry.

FAQs

  1. Can I use roasted red peppers instead of raw?

    Absolutely! Roasted red peppers add a lovely smoky sweetness that enhances the sauce. You can roast fresh peppers yourself or buy them jarred to save time.

  2. What if I don’t have a high-speed blender?

    A food processor works well too, but you might need to blend a bit longer and scrape down the sides more often to get the sauce silky smooth.

  3. Is this sauce vegan?

    It is vegan when you use nutritional yeast instead of Parmesan cheese. Either option yields a deliciously cheesy flavor.

  4. Can I prepare the sauce in advance?

    Yes! You can make the sauce a day ahead and store it in the fridge. Rewarm gently before serving and adjust the consistency with a splash of water as needed.

  5. What’s the best pasta to use with this sauce?

    I love using fettuccine or penne because they hold onto the sauce nicely, but really any pasta shape works. If you want a lighter option, spaghetti squash or vegetable noodles are fantastic too.

Final Thoughts

This Red Pepper Cashew Alfredo Pasta Recipe has become a staple in my kitchen because it’s that perfect balance of creamy comfort and wholesome ingredients. I adore how versatile it is — whether I’m meal prepping for the week, cooking for my family, or just craving something decadent yet healthy. I hope you’ll give it a try and make it your own—it’s honestly one of those recipes that feels like a warm hug on a plate. Let me know how you customize it; I’m always looking for new ideas!

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Red Pepper Cashew Alfredo Pasta Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.7 from 112 reviews
  • Author: Megane
  • Prep Time: 10 minutes active plus 6-8 hours soaking
  • Cook Time: 15 minutes
  • Total Time: 6 hours 25 minutes (including soaking)
  • Yield: 5 servings
  • Category: Sauce
  • Method: Blending
  • Cuisine: American
  • Diet: Vegan

Description

This creamy and flavorful Red Pepper Alfredo Sauce is a dairy-free alternative perfect for pasta lovers seeking a rich, plant-based sauce. Made from roasted red bell peppers, soaked raw nuts, nutritional yeast, and warm spices, it blends into a smooth, velvety texture that pairs wonderfully with pasta, spaghetti squash, or roasted vegetables. Ideal for quick weeknight meals, this sauce offers a nutritious, vegan-friendly option that is both satisfying and delicious.


Ingredients

Main Ingredients

  • 1 red bell pepper (raw or roasted)
  • 1/2 cup water
  • 1/2 cup raw cashews or macadamia nuts
  • 1/4 cup nutritional yeast or Parmesan cheese
  • 1 tsp salt
  • 2 tsp onion powder
  • 1/2 tsp ground turmeric
  • 1/8 tsp ground nutmeg (optional)

To Serve

  • 10 oz pasta or spaghetti squash or vegetables
  • Optional grilled or roasted veggies, beans, etc.


Instructions

  1. Soak the Nuts: Place the raw cashews or macadamia nuts in a cereal bowl and cover them completely with water. Let them soak for 6-8 hours to soften, then drain thoroughly and pat dry to prepare for blending.
  2. Blend the Sauce: In a food processor or high-speed blender, combine the soaked nuts, red bell pepper (raw or roasted), 1/2 cup water, nutritional yeast (or Parmesan cheese), salt, onion powder, ground turmeric, and optional nutmeg. Blend until the mixture becomes completely smooth and creamy.
  3. Cook the Pasta: While heating the sauce, cook your chosen pasta in a pot of salted boiling water according to the package instructions, ensuring it is al dente. Drain well but do not rinse to maintain the sauce’s adherence.
  4. Heat the Sauce: Pour the blended sauce into a pot and warm it gently over medium heat until it reaches your desired serving temperature. Stir occasionally to avoid sticking or scorching.
  5. Combine and Serve: Pour the warm red pepper Alfredo sauce over the drained pasta or spaghetti squash. Season with extra salt and pepper to taste, then stir in any optional grilled or roasted vegetables, beans, or other preferred add-ins for extra flavor and texture.

Notes

  • Soaking nuts is essential for a creamy texture; if short on time, soak in hot water for 1-2 hours.
  • Roasting the red bell pepper enhances the smoky flavor, but raw works for a fresher taste.
  • Use nutritional yeast to keep the recipe vegan, or Parmesan cheese for a richer, non-vegan option.
  • Adjust spices like turmeric and nutmeg according to your flavor preference.
  • This sauce can also serve as a dip or drizzle over roasted vegetables.
  • Store leftover sauce in an airtight container in the refrigerator for up to 3 days.

Nutrition

  • Serving Size: 1/5 of recipe with pasta (approx. 1 cup sauce and 2 oz pasta)
  • Calories: 280 kcal
  • Sugar: 3 g
  • Sodium: 450 mg
  • Fat: 15 g
  • Saturated Fat: 2.5 g
  • Unsaturated Fat: 12 g
  • Trans Fat: 0 g
  • Carbohydrates: 30 g
  • Fiber: 4 g
  • Protein: 8 g
  • Cholesterol: 0 mg

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