One-Pot Diavola Spicy Pasta

Featured in: Cozy Home Dinners

This dish offers a vibrant blend of Italian herbs and crushed red pepper flakes, melding seamlessly with penne in a single pot. Aromatic garlic, red onion, and bell pepper build a fragrant base enhanced by smoky paprika and rich tomato flavors. Cooking everything together ensures the pasta soaks up every spicy, savory note. Finished with a touch of Parmesan and fresh herbs, it balances heat with creamy and herbal accents. Perfect for a quick, hearty meal that delivers maximum flavor with minimum cleanup.

Updated on Fri, 19 Dec 2025 08:54:00 GMT
A steaming bowl of vibrant One-Pot Diavola Spicy Pasta garnished with fresh parsley and Parmesan. Save
A steaming bowl of vibrant One-Pot Diavola Spicy Pasta garnished with fresh parsley and Parmesan. | poppyhearth.com

I was halfway through a long work week when I realized I had no energy left for elaborate cooking. The pantry was reasonably stocked, but the idea of juggling multiple pots felt unbearable. That's when I grabbed a deep skillet and threw everything in at once, tomatoes, pasta, red pepper flakes, and let it simmer into something fiery and comforting. The kitchen filled with garlic and smoky paprika, and by the time I stirred in the Parmesan, I knew I'd stumbled onto something worth keeping.

The first time I made this for friends, someone asked if I'd ordered takeout from the Italian place down the street. I laughed and pointed at the single skillet still on the stove. They couldn't believe something that rich and layered came from such a simple method, and I've been making it for casual dinners ever since.

Ingredients

  • Penne or rigatoni: The ridges and tubes catch the spicy tomato sauce beautifully, and they hold up well during the one pot simmer without turning mushy.
  • Red onion: It adds a slight sweetness that balances the heat, and I've learned that chopping it finely helps it melt into the sauce rather than clumping.
  • Garlic cloves: Fresh garlic is nonnegotiable here, the fragrance it releases when it hits the oil sets the tone for everything that follows.
  • Red bell pepper: Thin slices soften into sweet ribbons that contrast beautifully with the fiery pepper flakes.
  • Canned diced tomatoes: Use the ones with juices included, they create the saucy base that the pasta absorbs as it cooks.
  • Olive oil: A good quality oil makes a difference in the first few minutes, it carries the garlic and onion flavors through the entire dish.
  • Italian seasoning: This blend brings oregano, basil, and thyme into the mix without opening multiple jars.
  • Crushed red pepper flakes: Start with the suggested amount and adjust up or down depending on how much heat you crave.
  • Smoked paprika: It adds a subtle depth and a hint of smokiness that makes the dish feel more complex than it is.
  • Parmesan cheese: Stirred in at the end, it melts into the sauce and adds a salty, nutty finish that ties everything together.
  • Fresh parsley or basil: A handful of chopped herbs brightens the whole plate and adds a pop of color right before serving.
  • Lemon zest: Optional, but a little zest cuts through the richness and makes the flavors feel even more alive.

Instructions

Start with the aromatics:
Heat the olive oil over medium heat until it shimmers, then add the chopped onion and let it soften for a few minutes until it turns translucent and sweet. This gentle start builds a flavorful foundation for everything else.
Add garlic and pepper:
Toss in the minced garlic and sliced red bell pepper, stirring frequently so the garlic doesn't burn. You'll know it's ready when the kitchen smells warm and inviting, usually around two minutes.
Combine pasta and liquids:
Pour in the diced tomatoes with their juices, add the uncooked pasta, water or broth, and all the seasonings. Stir everything together so the pasta is mostly submerged, it looks crowded at first but trust the process.
Simmer until tender:
Bring the mixture to a boil, then lower the heat and let it simmer uncovered, stirring every few minutes to prevent sticking. The pasta will absorb the liquid and become tender in about twelve to fourteen minutes.
Finish with cheese and zest:
Remove the skillet from the heat and fold in the grated Parmesan and lemon zest if you're using it. Taste and adjust the salt or pepper as needed, then let it rest for a minute before serving.
Serve and garnish:
Spoon the pasta into bowls and top with fresh parsley or basil and extra Parmesan. The herbs add brightness and the cheese adds richness, making each bite feel complete.
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One evening I made this after a frustrating day, and the act of stirring the pot, watching the pasta soften, smelling the garlic and pepper, pulled me back to center. By the time I sat down with a bowl and a glass of wine, the day's stress had faded into the background.

Making It Your Own

If you want more protein, sliced cooked chicken sausage or sautéed shrimp stirred in at the end turns this into a heartier meal. I've also swapped the Parmesan for nutritional yeast when cooking for vegan friends, and the dish still delivers that savory, cheesy note. The beauty of this recipe is that it bends easily to whatever you have on hand or whoever you're feeding.

Pairing and Serving Ideas

I usually serve this with a simple green salad dressed in lemon and olive oil, something light to balance the richness. A crisp Italian white wine like Pinot Grigio complements the heat and acidity perfectly, though sparkling water with a squeeze of lemon works just as well. If you have crusty bread around, it's perfect for soaking up any sauce left in the bowl.

Storage and Reheating

Leftovers keep well in the fridge for up to three days, and the flavors actually deepen overnight as the pasta continues to soak up the sauce. Reheat gently on the stovetop with a splash of water or broth to loosen it up, or microwave in short intervals, stirring in between. I've never had any left by day four, but if you do, it freezes reasonably well for up to a month.

  • Store in an airtight container to keep the pasta from drying out.
  • Add a drizzle of olive oil before reheating to refresh the texture.
  • Garnish with fresh herbs again after reheating, it brings back that just cooked brightness.
Close-up of the delicious One-Pot Diavola Spicy Pasta showing perfectly cooked penne and a rich tomato sauce. Save
Close-up of the delicious One-Pot Diavola Spicy Pasta showing perfectly cooked penne and a rich tomato sauce. | poppyhearth.com

This dish has become my answer to busy nights when I still want something that feels special. It's fast, forgiving, and every time I make it, I'm reminded that good food doesn't have to be complicated.

Recipe Questions

What pasta types work best for this dish?

Penne or rigatoni are ideal as they hold sauce well and cook evenly in one pot.

How can I adjust the spice level?

Reduce or increase crushed red pepper flakes according to your heat preference.

Can this dish be made vegan?

Yes, by substituting Parmesan with nutritional yeast or a vegan cheese alternative.

Is there a recommended broth for cooking?

Low-sodium vegetable broth adds depth, but water works fine for a lighter taste.

What herbs complement the flavors best?

Italian seasoning blends and fresh parsley or basil enhance the dish's aromatic profile.

One-Pot Diavola Spicy Pasta

Spicy Italian pasta with herbs and red pepper flakes cooked in one pot for a bold flavorful meal.

Prep duration
10 minutes
Cooking duration
20 minutes
Total duration
30 minutes
Created by Grace Holloway

Recipe type Cozy Home Dinners

Skill level Easy

Cuisine type Italian

Makes 4 Portions

Dietary details Meat-free

Required Ingredients

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, plus extra for serving
02 2 tbsp chopped fresh parsley or basil
03 Zest of ½ lemon (optional)

How-To Steps

Step 01

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

Step 02

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

Step 03

Combine Ingredients: Add canned diced tomatoes with their juices, pasta, water or vegetable broth, Italian seasoning, crushed red pepper flakes, smoked paprika, salt, and black pepper. Stir thoroughly to combine.

Step 04

Simmer Pasta: Bring the 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 Finishing Ingredients: Remove from heat and stir in grated Parmesan cheese and optional lemon zest. Adjust seasoning as needed.

Step 06

Serve: Plate the pasta and garnish with freshly chopped parsley or basil and extra Parmesan cheese.

Tools needed

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

Allergy notices

Check ingredients for allergens. Reach out to your healthcare provider with any questions.
  • Contains milk (Parmesan cheese) and wheat (pasta).
  • Use vegan cheese for dairy-free and gluten-free pasta for gluten-free adaptations.

Nutrition breakdown (per portion)

These details are meant for general advice, not medical guidance.
  • Energy: 370
  • Fats: 8 g
  • Carbohydrates: 62 g
  • Proteins: 13 g