One-Pot Diavola Spicy Pasta

Featured in: Weeknight Dinners

This vibrant Italian-style pasta melds a bold mix of crushed red pepper, smoked paprika, and aromatic herbs with fresh vegetables. Everything cooks together in a single pot, creating layers of spicy, savory flavor while keeping preparation and cleanup simple. The dish finishes with a sprinkle of Parmesan and fresh herbs for balance and richness. It suits vegetarians and can be adapted easily with proteins or vegan alternatives. A quick, comforting meal full of bright, robust tastes.

Updated on Sun, 21 Dec 2025 11:36:00 GMT
Steaming one-pot Diavola spicy pasta with vibrant red bell peppers and rich tomato sauce on display. Save
Steaming one-pot Diavola spicy pasta with vibrant red bell peppers and rich tomato sauce on display. | pulseoven.com

I stumbled onto this recipe on a Tuesday night when I had nothing but dried pasta, a can of tomatoes, and a craving for something that could wake up my taste buds. I threw everything into one pot, cranked up the heat on the red pepper flakes, and by the time the pasta was done, the whole kitchen smelled like a trattoria in Rome. My partner walked in, took one bite, and said it tasted like controlled chaos in the best way. Now it's our go-to whenever we want big flavor without the pile of dishes.

The first time I made this for friends, I accidentally doubled the red pepper flakes because I wasn't paying attention. Everyone's eyes watered a little, but they kept going back for seconds, laughing and fanning their mouths. One friend told me it was the most fun she'd had eating pasta in years. Since then, I've learned to measure my spices, but I still love that memory of everyone crowded around the table, sweating and smiling.

Ingredients

  • Penne or rigatoni: These shapes have ridges and hollows that trap the spicy sauce beautifully, and they hold up well when cooked directly in liquid without getting mushy.
  • Water or vegetable broth: Broth adds a deeper savory backbone, but water works just fine if that's what you have on hand.
  • Red onion: It brings a subtle sweetness that balances the heat, and it softens into the sauce as everything simmers together.
  • Garlic cloves: Fresh garlic is non-negotiable here because it infuses the oil and creates that intoxicating aroma that makes everyone gather in the kitchen.
  • Red bell pepper: Adds color, a hint of natural sweetness, and a pleasant texture that contrasts with the tender pasta.
  • Canned diced tomatoes: They break down into a rich, slightly chunky sauce, and the juices help cook the pasta evenly.
  • Olive oil: Use a good one because it's the foundation of the flavor, coating the vegetables and carrying the spices throughout the dish.
  • Italian seasoning: A blend of oregano, basil, and thyme that gives instant Mediterranean warmth without needing a dozen individual jars.
  • Crushed red pepper flakes: This is where the diavola heat comes from, so start with less if you're cautious and add more as you go.
  • Smoked paprika: It adds a subtle smokiness that makes the dish taste more complex, like it's been simmering for hours.
  • Salt and black pepper: Essential for bringing out all the other flavors, and you'll want to taste and adjust at the end.
  • Parmesan cheese: Stir it in at the end for creaminess and a salty, umami punch that ties everything together.
  • Fresh parsley or basil: A handful of chopped herbs brightens the whole dish and adds a fresh, grassy note right before serving.
  • Lemon zest: Optional, but it lifts the richness with a little citrusy spark that makes each bite feel lighter.

Instructions

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Start with the aromatics:
Heat the olive oil in your largest skillet or Dutch oven over medium heat, then add the chopped red onion and let it soften for a few minutes until it turns translucent and smells sweet. This is the flavor base, so don't rush it.
Build the fragrance:
Toss in the minced garlic and sliced red bell pepper, stirring them around until the garlic becomes fragrant and the pepper starts to soften, about two minutes. You'll know it's ready when the kitchen smells incredible.
Combine everything:
Pour in the canned tomatoes with their juices, add the uncooked pasta, water or broth, and all the seasonings. Give it a good stir so the pasta is submerged and the spices are evenly distributed.
Simmer and stir:
Bring the whole pot to a boil, then lower the heat to a gentle simmer and cook uncovered for 12 to 14 minutes, stirring frequently to prevent sticking. The pasta will absorb the liquid and become tender while soaking up all that spicy, tomatoey goodness.
Finish with richness:
Once the pasta is al dente and most of the liquid is gone, take the pot off the heat and stir in the grated Parmesan and lemon zest if you're using it. Taste and adjust the salt, pepper, or red pepper flakes to your liking.
Serve it hot:
Spoon the pasta into bowls, sprinkle with fresh parsley or basil and extra Parmesan, and bring it to the table while it's still steaming.
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A close-up of the flavorful one-pot Diavola spicy pasta, sprinkled with fresh herbs and Parmesan. Save
A close-up of the flavorful one-pot Diavola spicy pasta, sprinkled with fresh herbs and Parmesan. | pulseoven.com

One rainy Sunday, I made this for my mom, who usually prefers milder food. She took a cautious first bite, paused, then smiled and said it reminded her of the little osteria we visited in Florence years ago. We sat at the table for an hour, talking about that trip and scraping the bottom of the pot. It's funny how a simple spicy pasta can bring back an entire afternoon halfway across the world.

How to Adjust the Heat Level

If you're nervous about spice, start with just half a teaspoon of red pepper flakes and taste the sauce before serving. You can always stir in more at the end, but you can't take it back once it's in there. I've also found that a dollop of ricotta or a drizzle of cream can mellow the heat without losing the flavor, so keep that trick in your back pocket if things get too fiery.

Make It a Complete Meal

This pasta is hearty enough on its own, but I love serving it with a simple arugula salad dressed in lemon and olive oil to cut through the richness. If you want more protein, toss in some sliced cooked chicken sausage or sautéed shrimp right at the end, and it turns into a full dinner that feels restaurant-worthy. A crusty baguette on the side is perfect for mopping up every last drop of sauce.

Storage and Leftovers

Leftovers keep well in an airtight container in the fridge for up to three days, though the pasta will continue to soak up the sauce and become softer. When you reheat it, add a splash of water or broth to loosen everything up, and warm it gently on the stove or in the microwave. I actually think the flavors deepen overnight, so don't be surprised if day-two pasta tastes even better than the original batch.

  • Store in a sealed container to keep the garlic and tomato flavors from spreading to other foods in your fridge.
  • Reheat gently over medium-low heat with a little extra liquid to bring back the saucy consistency.
  • Freeze individual portions in freezer-safe bags for up to two months if you want a quick future dinner.
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Delicious, al dente one-pot Diavola spicy pasta is ready to serve with a garnish of fresh basil. Save
Delicious, al dente one-pot Diavola spicy pasta is ready to serve with a garnish of fresh basil. | pulseoven.com

This dish has become my proof that you don't need hours or fancy ingredients to make something that feels special. Every time I pull out that one pot and hear the sizzle of garlic hitting hot oil, I know I'm about to eat well and clean up fast, which is exactly the kind of magic weeknight cooking should be.

Recipe FAQs

Can I use gluten-free pasta for this dish?

Yes, gluten-free pasta works well and can be cooked following the same method as regular pasta.

How can I adjust the spice level?

Modify the amount of crushed red pepper flakes to make it milder or spicier according to your preference.

What can I substitute for Parmesan cheese?

Nutritional yeast provides a similar savory depth for a vegan or dairy-free option.

Is it possible to add protein to the dish?

Yes, sliced cooked chicken sausage or sautéed shrimp can be stirred in near the end for added protein.

What herbs complement this pasta best?

Fresh parsley or basil added at the end enhances freshness and aromatic notes.

One-Pot Diavola Spicy Pasta

A zesty blend of pasta, tomatoes, and Italian spices simmered together for a flavorful one-pot meal.

Prep Time
10 min
Cook Time
20 min
Overall Time
30 min
Created by Henry Baker


Skill Level Easy

Cuisine Italian

Makes 4 Portions

Diet Preferences Meatless

What You'll Need

Pasta

01 12 oz penne or rigatoni
02 4 cups water or low-sodium vegetable broth

Vegetables

01 1 medium red onion, finely chopped
02 3 garlic cloves, minced
03 1 red bell pepper, thinly sliced
04 14 oz canned diced tomatoes

Seasonings

01 2 tbsp olive oil
02 2 tsp Italian seasoning
03 1½ tsp crushed red pepper flakes
04 1 tsp smoked paprika
05 1 tsp salt, or to taste
06 ½ tsp freshly ground black pepper

Finishing Touches

01 ⅓ cup grated Parmesan cheese
02 2 tbsp chopped fresh parsley or basil
03 Zest of ½ lemon, optional

How to Make

Step 01

Sauté Aromatics: Heat olive oil in a large deep skillet or Dutch oven over medium heat. Add chopped onion and cook for 2 to 3 minutes until softened.

Step 02

Add Garlic and Pepper: Stir in minced garlic and sliced red bell pepper; cook for 2 minutes until fragrant.

Step 03

Combine Main Ingredients: Add canned diced tomatoes with juices, penne, water or vegetable broth, Italian seasoning, crushed red pepper flakes, smoked paprika, salt, and black pepper. Stir thoroughly to mix all components.

Step 04

Simmer Pasta: Bring mixture to a boil, then reduce heat and simmer uncovered for 12 to 14 minutes, stirring frequently, until pasta is al dente and most liquid is absorbed.

Step 05

Incorporate Cheese and Zest: Remove from heat. Stir in grated Parmesan cheese and lemon zest if using. Adjust seasoning as desired.

Step 06

Garnish and Serve: Serve hot, garnished with fresh parsley or basil and additional Parmesan cheese.

Tools Needed

  • Large deep skillet or Dutch oven
  • Wooden spoon
  • Chef’s knife
  • Cutting board

Allergens

Always review each ingredient for allergens. Ask a healthcare provider if you're not sure.
  • Contains milk from Parmesan cheese and wheat from pasta.
  • For dairy-free preparation, use vegan cheese alternatives.
  • For gluten-free, use gluten-free pasta substitutes.
  • Always verify ingredient labels for hidden allergens.

Nutrition Info (per serving)

Use this nutrition estimate as a guideline, but be sure to verify with a health expert if needed.
  • Calories: 370
  • Fats: 8 g
  • Carbohydrates: 62 g
  • Proteins: 13 g