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Red Pepper Alfredo Sauce with Pasta Recipe

If you’re like me and adore creamy pasta sauces but want something a bit different from the usual Alfredo, this Red Pepper Alfredo Sauce with Pasta Recipe is an absolute game changer. It’s velvety, full of flavor, and brings a lovely pop of color to your dinner table. Plus, it’s surprisingly easy to make and can be tailored to suit a variety of diets or preferences. Trust me, once you try this, your regular pasta routine will never be the same!

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Why You’ll Love This Recipe

  • Creamy & Comforting: The cashew base creates a rich texture that feels indulgent without any cream or dairy.
  • Vibrant Flavor: Roasted red bell peppers add a subtle sweetness and depth you won’t get from a traditional Alfredo sauce.
  • Versatile & Easy: Whether you use pasta, spaghetti squash, or veggies, this sauce pairs beautifully and comes together quickly.
  • Family Favorite: I’ve made this for my loved ones so many times and it’s always met with enthusiastic smiles and seconds.

Ingredients You’ll Need

Every ingredient in this Red Pepper Alfredo Sauce with Pasta Recipe plays a role in building that mouthwatering, creamy texture and balanced flavor. I like to pick the freshest red bell pepper I can find, and soaking the nuts overnight really makes the sauce silky smooth.

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 Alfredo Sauce with Pasta, creamy red pepper pasta sauce, vegan Alfredo with roasted red peppers, healthy red pepper pasta, easy red pepper Alfredo recipe
  • Red bell pepper: Fresh or roasted, it adds sweetness and a gorgeous red hue to the sauce.
  • Water: Used to blend the sauce and keep it light yet creamy.
  • Raw cashews or macadamia nuts: Soaked to soften and create the creamy base – cashews are my go-to, but macadamia offer a richer flavor.
  • Nutritional yeast or Parmesan cheese: Nutritional yeast is perfect for a vegan version and adds a cheesy, nutty flavor, while Parmesan ups the savory depth.
  • Salt: Balances the flavors perfectly.
  • Onion powder: Adds subtle savoriness without overpowering.
  • Ground turmeric: For a little earthy warmth and that lovely golden tint.
  • Ground nutmeg (optional): A pinch brings warmth and complexity to the sauce.
  • Pasta or spaghetti squash or vegetables: Your choice here! I’ve used everything from fettuccine to zucchini noodles, and it always works.
  • Optional grilled or roasted veggies, beans, etc.: Great for adding extra texture, nutrition, and flavor.
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 flexible this Red Pepper Alfredo Sauce with Pasta Recipe is. Over time, I’ve customized it to suit my family’s tastes, and honestly, it’s a recipe that invites you to get creative in your own kitchen too.

  • Vegetarian or Vegan: Swap Parmesan for nutritional yeast when you want to keep it dairy-free—I’ve done this countless times with delicious results.
  • Spicy Kick: Sometimes I toss in a little smoked paprika or chili flakes to amp up the flavor and heat.
  • Protein Boost: Adding grilled chicken or white beans turns this into a heartier meal for days when you want extra sustenance.
  • Roasted vs. Raw Peppers: Roasting the pepper adds smoky notes, while raw gives a fresher, brighter flavor—try both to see what you prefer.

How to Make Red Pepper Alfredo Sauce with Pasta Recipe

Step 1: Soak the Nuts for a Creamy Base

This is the secret to silky sauce! Place your raw cashews (or macadamia nuts) in a bowl, cover them with water, and let them soak for 6-8 hours or overnight. I always make sure to drain and pat them dry really well before blending—any moisture leftover can make the sauce too thin.

Step 2: Blend Up the Sauce

Throw the soaked nuts, red bell pepper, water, nutritional yeast or Parmesan, salt, onion powder, turmeric, and nutmeg (if using) into your food processor or high-speed blender. Blend until you get a perfectly smooth, creamy sauce—this usually takes a couple of minutes depending on your machine. Don’t rush this part; I learned the hard way that a slightly grainy sauce just doesn’t have the same magic.

Step 3: Cook Pasta While Gently Warming Sauce

Bring a pot of salted water to a boil and cook your pasta according to package instructions. Meanwhile, transfer your sauce to a small pot and warm it on low heat, stirring gently so it doesn’t stick or scorch. This helps meld the flavors without damaging that silky texture we worked so hard for.

Step 4: Combine and Customize

Drain your pasta well (but please don’t rinse; you want the sauce to cling beautifully). Toss the warm sauce with the pasta, then stir in any grilled veggies, beans, or extras you love. Season with salt and pepper to taste, and voilà — dinner is served!

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Pro Tips for Making Red Pepper Alfredo Sauce with Pasta Recipe

  • Nut Soaking Time: Don’t skimp on soaking the nuts overnight—even a few hours makes a huge difference in texture.
  • Blend Thoroughly: Use a high-speed blender if you can; it turns the sauce incredibly creamy in less time.
  • Adjust Sauce Thickness: If your sauce feels too thick, add a splash more water and blend again until it’s just right.
  • Season Last: Taste and season after combining with pasta to avoid over-salting, especially if you added Parmesan.

How to Serve Red Pepper Alfredo Sauce with Pasta Recipe

Red Pepper Alfredo Sauce with Pasta Recipe - Serving

Garnishes

I like to sprinkle freshly chopped basil or parsley over the top to add brightness and a pop of green. A light drizzle of extra virgin olive oil or a sprinkle of toasted pine nuts amps up the texture and flavor, making the dish feel extra special.

Side Dishes

Simple is best here—a crisp green salad with lemon vinaigrette balances the creamy sauce perfectly. Roasted asparagus or garlic bread are other favorites that pair amazingly, giving the meal a satisfying variety of textures and flavors.

Creative Ways to Present

For a dinner party, I’ve served this pasta twirled elegantly on plates topped with microgreens and a sprinkle of smoked paprika. You can even pipe the sauce onto roasted vegetable bowls or stuffed peppers for a fun twist that impresses guests every time.

Make Ahead and Storage

Storing Leftovers

I store leftover sauce in an airtight container in the fridge for up to 3 days. It holds up really well, but you might notice it thickens a bit—just stir in a splash of water or milk before reheating to loosen it up.

Freezing

Freezing the sauce works great! Pour it into freezer-safe containers in portion sizes you’ll use later. When thawed, I always blend it again briefly to refresh the creaminess—it tastes just like fresh.

Reheating

Reheat gently on the stove over low heat, stirring often to avoid scorching. If the sauce seems too thick, adding a bit more water or broth helps restore that perfect pourable texture.

FAQs

  1. Can I use jarred roasted red peppers instead of fresh ones?

    Absolutely! Jarred roasted red peppers are a convenient shortcut and still deliver great flavor. Just drain them well before blending so the sauce isn’t too watery.

  2. Is this recipe suitable for vegans?

    Yes! To keep it vegan, use nutritional yeast instead of Parmesan cheese, and make sure the pasta you select contains no eggs. I’ve personally made it vegan dozens of times and love how rich it tastes.

  3. Can I prepare the sauce in advance?

    Yes, the sauce can be made up to 2 days ahead and stored in the refrigerator. Just give it a good stir before reheating, and add a touch of water if it’s thickened too much.

  4. What type of pasta pairs best with this sauce?

    I especially love wide noodles like fettuccine or pappardelle because they hold the creamy sauce well, but this recipe is flexible—you can even try it with spaghetti squash or spiralized veggies for a lighter option.

Final Thoughts

Honestly, this Red Pepper Alfredo Sauce with Pasta Recipe has become one of my go-to dishes whenever I want something comforting yet fresh and vibrant. I love how it’s easy enough for busy weeknights but special enough to share with friends or family. Once you try it, you’ll see what I mean—it’s the kind of recipe you keep returning to again and again. So go ahead, give it a whirl. I promise your taste buds will thank you!

Print
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Red Pepper Alfredo Sauce with Pasta Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.8 from 133 reviews
  • Author: Sophia
  • Prep Time: 10 minutes
  • Cook Time: 15 minutes
  • Total Time: 25 minutes
  • Yield: 5 servings
  • Category: Sauce
  • Method: Stovetop
  • Cuisine: Italian
  • Diet: Vegetarian

Description

A creamy and flavorful Red Pepper Alfredo Sauce made with either raw or roasted red bell peppers, blended with cashews or macadamia nuts for a rich, dairy-free texture. This versatile sauce combines nutritional yeast or Parmesan cheese with aromatic spices, perfect for tossing with pasta, spaghetti squash, or steamed vegetables for a delicious, wholesome meal.


Ingredients

Sauce 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)

Main Dish Ingredients

  • 10 oz pasta or spaghetti squash or vegetables
  • Optional: grilled or roasted veggies, beans, or other add-ins


Instructions

  1. Soak Nuts: Place the cashews or macadamia nuts in a cereal bowl and cover them with water. Let them soak for 6-8 hours to soften, then drain fully and pat dry.
  2. Blend Sauce: In a food processor or high-speed blender, combine the soaked nuts, red bell pepper, 1/2 cup water, nutritional yeast or Parmesan cheese, salt, onion powder, ground turmeric, and ground nutmeg if using. Blend until completely smooth and creamy.
  3. Cook Pasta: In a separate pot, bring salted water to a boil and cook the pasta according to the package directions until al dente. Drain fully but do not rinse to maintain sauce adherence.
  4. Heat Sauce: Pour the blended sauce into a pot and warm it over medium heat until it reaches your desired serving temperature, stirring occasionally to prevent sticking.
  5. Combine and Serve: Pour the warm sauce over the cooked pasta. Season with additional salt and black pepper to taste, then stir in any optional grilled or roasted vegetables, beans, or other desired add-ins. Serve immediately for best flavor and texture.

Notes

  • Soaking nuts is essential for a smooth and creamy sauce texture.
  • You can use raw or roasted red bell peppers depending on your flavor preference.
  • Adjust the seasoning to your taste, especially salt and pepper.
  • This sauce works well with gluten-free pasta or vegetable substitutes for a low-carb option.
  • Use nutritional yeast for a vegan sauce, or Parmesan for a more traditional dairy flavor.
  • The sauce can be stored in the refrigerator for up to 3 days and reheated gently before serving.

Nutrition

  • Serving Size: 1/5 of recipe (approx. 1 cup sauce with pasta)
  • Calories: 320
  • Sugar: 5g
  • Sodium: 400mg
  • Fat: 18g
  • Saturated Fat: 3g
  • Unsaturated Fat: 14g
  • Trans Fat: 0g
  • Carbohydrates: 30g
  • Fiber: 5g
  • Protein: 9g
  • Cholesterol: 0mg

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