Basic Spaghetti Recipe

I always find myself craving a comforting plate of spaghetti when a busy weeknight hits. This basic spaghetti recipe delivers a high-end experience without any complex techniques, resulting in a vibrant, creamy, non-traditional red sauce that’s ready in under an hour. It’s perfect when you want to impress or just treat yourself to something comforting and a little different. This basic spaghetti recipe version uses a secret ingredient—walnuts—to create a naturally creamy texture without heavy cream. We’ll focus on simple steps that maximize flavor and yield a restaurant-quality finish with minimal effort.

Ingredients

• 400 g (14 oz) Spaghetti: Choose a high-quality dry pasta made with 100% durum wheat semolina for the best al dente texture. This is the foundation of our basic spaghetti recipe; cook to package directions but pull it slightly early for al dente. For a gluten-free option, ensure you use a corn or brown rice spaghetti, which can be substituted 1:1.
• 3 Large Red Bell Peppers (about 750 g / 1.6 lb total): Select peppers that are firm and vibrant red with smooth skin. Roasting them concentrates their natural sweetness and gives the sauce a smoky depth. Do not substitute green or yellow peppers, as they won’t provide the same sweetness or vibrant red color for the sauce.
• 60 g (1/2 cup) Walnuts, shelled: Use raw walnuts, not roasted or salted, for the best result. These are essential for creating the creamy, rich texture of the sauce, acting as a natural thickener. Toasting them lightly beforehand enhances their nutty flavor and deepens the final sauce complexity.
• 60 ml (1/4 cup) Extra Virgin Olive Oil, plus more for roasting and drizzling: Use a good quality EVOO for its fruitiness and richness in the finished sauce. A portion of the oil is used for blending, while another portion is used for starting the sauce base and finishing the dish. The final drizzle adds a glossy shine and fresh flavor just before serving.
• 3 Cloves Garlic, minced: Provides the essential aromatic base for the sauce. Always use fresh garlic for the most robust flavor, as powdered garlic will not achieve the same result here. When sautéing, watch carefully to prevent burning, as burnt garlic turns bitter.
• 5 ml (1 tsp) Red Chili Flakes (adjust to taste): Adds a subtle warmth and background heat to balance the sweetness of the roasted peppers. Adjust this amount up or down depending on your preferred spice level. For a milder sauce, start with 1/2 tsp or omit entirely.
• 30 g (2 tbsp) Tomato Paste: This adds a layer of umami and depth, complementing the roasted peppers. Cooking the tomato paste briefly in the skillet helps caramelize its sugars and removes any metallic aftertaste. (If you want a more intense tomato flavor, you can add up to 3 tbsp.)
• 120 ml (1/2 cup) Vegetable Broth: Used as the liquid base for blending the sauce to achieve the desired consistency. Vegetable broth adds more flavor than water; ensure you are using low-sodium broth to control the final salt level. (You can substitute chicken broth if desired, but vegetable broth keeps the recipe vegetarian-friendly.)
• 5 ml (1 tsp) Lemon Juice: A small amount of lemon juice brightens the flavors and provides necessary acidity to cut through the richness of the walnuts and oil. Always use fresh lemon juice; bottled juice often has an off-flavor that can dull the sauce. Add a little extra at the end for an even brighter finish, if desired.
• 7 g (1 tsp) Fine Sea Salt, plus more for pasta water: Essential for seasoning both the sauce and the pasta water. Use plenty of salt in the pasta water to season the spaghetti from the inside out (as salty as the sea). Taste the sauce after blending and adjust the salt and pepper to your preference.
• 2.5 g (1/2 tsp) Freshly Ground Black Pepper: Adds a sharp, pungent flavor to enhance the other ingredients. Freshly grinding your pepper releases more flavor than pre-ground pepper. Use white pepper if you prefer a less visible spice, but black pepper provides better contrast.
• 30 g (1/4 cup) Fresh Parsley, finely chopped, for garnish: Provides a fresh, herbal finish and vibrant green color contrast. Do not substitute dried parsley; fresh parsley is crucial for this step. (You can use other fresh herbs like basil or oregano if preferred.)

Instructions

1. Roast the Red Peppers: Preheat your oven to 200°C (400°F) and line a baking sheet with parchment paper. Halve and core the red bell peppers, then place them cut-side down on the prepared sheet. Drizzle lightly with olive oil and roast for 25-30 minutes, or until the skins are thoroughly blistered and slightly charred.
2. Steam and Peel: Transfer the hot roasted peppers to a heatproof bowl immediately after removing them from the oven. Cover the bowl tightly with plastic wrap or a lid and let them steam for 10-15 minutes; this makes the skins easy to peel off. Once cool enough to handle, peel the skins off the peppers and discard them.
3. Toast the Walnuts: While the peppers are roasting, spread the walnuts on a separate small baking sheet. Toast them in the same oven for 5-7 minutes, watching carefully to prevent burning, until fragrant and lightly golden. Remove from the oven and set aside to cool slightly.
4. Build the Sauce Base: In a large skillet or Dutch oven, heat 30 ml (2 tbsp) of the olive oil over medium heat. Add the minced garlic and red chili flakes and cook for 1-2 minutes until fragrant, being careful not to burn the garlic. Stir in the tomato paste and cook for another 2 minutes, stirring constantly, to deepen its flavor and remove any metallic taste.
5. Blend to Creaminess: Transfer the peeled roasted red peppers, toasted walnuts, the garlic-chili-tomato paste mixture from the skillet, remaining 30 ml (2 tbsp) olive oil, vegetable broth, lemon juice, salt, and black pepper to a high-speed blender. Blend until the mixture is completely smooth and creamy. Taste and adjust seasoning as needed, ensuring a balance of sweet, savory, and spicy notes.
6. Cook the Pasta: Bring a large pot of heavily salted water to a rolling boil. Add the basic spaghetti recipe and cook according to package directions until al dente (firm to the bite). Before draining, reserve 240 ml (1 cup) of the pasta cooking water. This reserved water is crucial for perfecting the sauce consistency for this basic spaghetti recipe.
7. Combine and Emulsify: Drain the basic spaghetti recipe and immediately add it to the skillet (or a clean large bowl) with the roasted red pepper and walnut sauce. Add 60 ml (1/4 cup) of the reserved pasta water and toss vigorously for 1-2 minutes. This process emulsifies the sauce, allowing it to coat the spaghetti beautifully; add more pasta water, 15 ml (1 tbsp) at a time, until the sauce reaches your desired glossy consistency. I always add a little more water than I think I need, especially if making a large batch of this basic spaghetti recipe, as the pasta continues to absorb moisture quickly.
8. Plate and Garnish: Coil generous portions of the sauced basic spaghetti recipe onto shallow bowls or plates. Drizzle a small amount of extra virgin olive oil over the pasta for sheen. Scatter generously with fresh chopped parsley and serve immediately.

Pro Tips for Making the Creamiest Sauce

Here are a few tips to ensure your sauce turns out velvety smooth and coats the pasta beautifully every time.

• Don’t skip the steam: Steaming the roasted red peppers in a covered bowl helps to loosen the skin, making peeling much easier and faster. If you skip this step, peeling can be difficult and time-consuming.
• Reserve pasta water: This is non-negotiable for a professional-tasting dish. The starchy water helps to bind the sauce and basic spaghetti together, preventing a thin or oily result. Add the water slowly, a tablespoon at a time, to achieve the perfect consistency.
• Toast the walnuts: Toasted walnuts are essential for the sauce’s flavor profile. Raw walnuts will taste bland in comparison and won’t contribute to the nutty, savory notes. Be careful when toasting to avoid burning them, as this will result in a bitter taste.
• Use a high-speed blender: While you can use a food processor, a high-speed blender results in the smoothest possible sauce texture. The goal is to break down the walnuts completely so the sauce feels creamy rather than gritty. Blend for 2-3 minutes or until perfectly smooth.

Why You’ll Love This Roasted Red Pepper Sauce

No Heavy Cream

This sauce achieves its creamy texture from blended walnuts and roasted red peppers, making it naturally dairy-free (if using vegetable broth). It’s a healthier alternative to traditional cream-based sauces while still feeling rich and satisfying. The high-speed blending process breaks down the walnuts to create a smooth, velvety consistency for this basic spaghetti recipe.

Vibrant Flavor Profile

Roasting red peppers brings out their natural sweetness and smokiness, creating a complexity that a raw sauce cannot replicate. The lemon juice and chili flakes add a bright, spicy counterpoint that prevents the sauce from feeling heavy or one-note. I often make this for family dinners because the flavor profile works for all ages; my kids especially love the vibrant color and smooth texture.

Versatile and Make-Ahead Friendly

The sauce itself can be made up to 3 days ahead of time and stored in the refrigerator in an airtight container. This makes it an excellent option for meal prepping; simply cook the basic spaghetti and combine it with the prepared sauce when ready. The basic sauce can also be used as a spread for sandwiches or a dip for vegetables, making it a very family-friendly, quick meal solution.

FAQs for Basic Spaghetti Recipes

Q: Can I use pre-roasted red peppers from a jar?

A: Yes, you can. Drain them thoroughly and rinse off any excess liquid before using. This will speed up the recipe significantly, though it won’t have the same depth of flavor as freshly roasted peppers. It’s still a great choice for convenience on busy weeknights.

Q: Why did my sauce turn out grainy?

A: This usually happens because the walnuts were not blended thoroughly enough. Ensure you are using a high-speed blender and blend for several minutes until the sauce is completely smooth and uniform. You might also need to add a bit more liquid to help it blend properly.

Q: Can I add a protein like chicken or sausage?

A: Absolutely. Sauté pre-cooked chicken breast or shrimp in a separate pan before starting the sauce. Add the protein to the skillet when tossing the pasta and sauce together in step 7 for a high-protein meal. This is a very versatile basic spaghetti recipe for customization.

Q: Can I freeze this sauce?

A: Yes, this sauce freezes exceptionally well. Store it in an airtight container for up to 3 months. Thaw overnight in the refrigerator before reheating gently on the stovetop and combining with freshly cooked basic spaghetti recipe.

Q: How long do leftovers last in the refrigerator?

A: Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently in a skillet or microwave, adding a splash of water or broth to loosen the sauce as needed. This makes it great for meal prep during the week.

Q: What if I don’t have walnuts?

A: You can try substituting raw, unsalted cashews for a similar creamy texture. Almonds will also work but may change the flavor profile slightly. If a nut allergy is a concern, try substituting sunflower seeds, though the texture and flavor will be different. I keep cashews in the pantry specifically for this recipe when I’m out of walnuts.

Conclusion

This basic spaghetti recipe with creamy roasted red pepper sauce proves that weeknight meals can be both simple and exceptional. By using fresh, real ingredients and basic cooking techniques, you achieve a depth of flavor far beyond a traditional jarred sauce. Pin this recipe for your next weeknight meal and surprise your family with a truly elevated comfort food experience.

basic spaghetti recipe

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• Author: Emily Madona
• Total Time: 55 minutes
• Yield: 4 servings 1x
• Diet: Vegetarian

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Description

A non-traditional spaghetti recipe featuring a creamy red sauce made from roasted red peppers and walnuts, providing a rich, savory flavor without any heavy cream.

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Ingredients

Scale 1x2x3x

• 400 g spaghetti, high-quality durum wheat semolina
• 3 large red bell peppers (about 750 g)
• 60 g (0.5 cup) raw walnuts, shelled
• 60 ml (0.25 cup) extra virgin olive oil, plus extra for roasting and drizzling
• 3 cloves garlic, minced
• 5 ml (1 tsp) red chili flakes
• 30 g (2 tbsp) tomato paste
• 120 ml (0.5 cup) vegetable broth, low-sodium
• 5 ml (1 tsp) fresh lemon juice
• 7 g (1 tsp) fine sea salt, plus more for pasta water
• 2.5 g (0.5 tsp) freshly ground black pepper
• 30 g (0.25 cup) fresh parsley, chopped, for garnish

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Instructions

1. Roast Red Peppers: Preheat oven to 400°F (200°C). Halve and core the red bell peppers, place cut-side down on a baking sheet lined with parchment paper, and drizzle lightly with olive oil. Roast for 25-30 minutes, or until the skins are thoroughly blistered.
2. Steam and Peel Peppers: Transfer the hot roasted peppers immediately to a heatproof bowl. Cover the bowl tightly and let them steam for 10-15 minutes. Once cool enough to handle, peel the skins off the peppers and discard them.
3. Toast Walnuts: While the peppers are roasting, spread the walnuts on a separate small baking sheet. Toast them in the oven for 5-7 minutes until fragrant and lightly golden. Set aside to cool slightly.
4. Build Sauce Base: Heat 30 ml (2 tbsp) of olive oil in a large skillet over medium heat. Add the minced garlic and red chili flakes and cook for 1-2 minutes until fragrant. Stir in the tomato paste and cook for 2 more minutes, stirring constantly.
5. Blend Sauce Ingredients: Transfer the peeled roasted red peppers, toasted walnuts, the garlic-chili-tomato paste mixture from the skillet, remaining 30 ml (2 tbsp) olive oil, vegetable broth, lemon juice, salt, and black pepper to a high-speed blender. Blend until completely smooth and creamy.
6. Cook Pasta: Bring a large pot of heavily salted water to a rolling boil. Add the spaghetti and cook according to package directions until al dente. Reserve 240 ml (1 cup) of the pasta cooking water before draining.
7. Combine and Emulsify: Drain the spaghetti and immediately add it to the skillet (or a clean large bowl) with the sauce. Add 60 ml (0.25 cup) of the reserved pasta water and toss vigorously for 1-2 minutes to emulsify the sauce and coat the pasta. Add more reserved pasta water 1 tbsp at a time until the desired consistency is achieved.
8. Serve and Garnish: Plate generous portions of the sauced spaghetti. Drizzle with extra virgin olive oil and garnish generously with fresh chopped parsley. Serve immediately.

Notes

To achieve perfect sauce consistency, reserve some pasta cooking water to emulsify the sauce with the spaghetti. The walnuts are essential for creating the creamy texture; ensure they are toasted before blending for a deeper flavor. Use high-quality pasta for the best al dente result. Store leftovers in an airtight container for up to 3 days.

• Prep Time: 15 minutes
• Cook Time: 40 minutes
• Category: Main Course
• Method: Baking, Stovetop
• Cuisine: General

Nutrition

• Serving Size: 1 serving (290 g)
• Calories: 600 calories
• Sugar: 8 g
• Sodium: 400 mg
• Fat: 25 g
• Saturated Fat: 3 g
• Unsaturated Fat: 20 g
• Trans Fat: 0 g
• Carbohydrates: 80 g
• Fiber: 5 g
• Protein: 15 g
• Cholesterol: 0 mg