One-Pot Diavola Spicy Pasta

Featured in: Weeknight Dinners

This one-pot Diavola pasta brings together penne, red bell pepper, garlic, and aromatic Italian herbs with crushed red pepper flakes for a fiery, flavorful dish. Simmered in one pan to absorb all juices and spices, it offers a perfect balance of spice and zest enhanced by Parmesan and fresh herbs. Quick to prepare and ideal for a satisfying weeknight meal, it welcomes variations like adding shrimp or vegan alternatives for versatility.

Updated on Sun, 21 Dec 2025 12:16:00 GMT
One-Pot Diavola Spicy Pasta, simmering with red bell peppers, ready to serve with Parmesan. Save
One-Pot Diavola Spicy Pasta, simmering with red bell peppers, ready to serve with Parmesan. | milestonepan.com

Last Tuesday, I burned garlic while trying to answer a work call, and instead of starting over, I just kept going. That batch of pasta turned out smoky and wild, and I realized sometimes the best meals come from not overthinking it. This one-pot diavola became my Tuesday night reset, the kind of dish that clears your head with heat and fills the kitchen with the smell of tomatoes and red pepper doing their thing together.

I made this for a friend who kept saying she didnt like spicy food, and halfway through her second bowl she admitted she might have been wrong about herself. We sat on the couch with our bowls balanced on our knees, and the only sound was scraping forks and the occasional laugh. Thats when I knew this recipe was a keeper, not because it was complicated, but because it made people forget to talk and just eat.

Ingredients

  • Penne or rigatoni (350 g): The ridges catch the sauce and the shape holds up to boiling right in the pot, so dont swap for something delicate like angel hair.
  • Water or vegetable broth (1 L): Broth adds a deeper flavor, but water works fine if you salt it well and let the tomatoes do the talking.
  • Red onion (1 medium): Sweeter than yellow and it softens into the sauce without disappearing completely.
  • Garlic cloves (3): Mince them small so they melt into the oil and perfume everything without burning in the first minute.
  • Red bell pepper (1): Adds a faint sweetness that balances the heat, and it holds its shape even after simmering.
  • Canned diced tomatoes (400 g): Use the juice too, it becomes part of the sauce and keeps the pasta from sticking.
  • Olive oil (2 tbsp): This is your base, it carries the garlic and onion flavor into every bite.
  • Italian seasoning (2 tsp): A blend saves you from measuring five different jars, and it tastes like someone spent an hour on it.
  • Crushed red pepper flakes (1½ tsp): Start with less if youre nervous, you can always add more but you cant take it back.
  • Smoked paprika (1 tsp): This is the secret, it adds a ghost of smokiness that makes people ask what you did differently.
  • Salt and black pepper: Season in layers, a little now and a little at the end, so the flavor builds instead of just sitting on top.
  • Parmesan cheese (40 g): Stir it in at the end so it melts into the sauce and clings to the pasta, then add more on top because why not.
  • Fresh parsley or basil (2 tbsp): Chopped right before serving, it adds a green brightness that cuts through the richness.
  • Lemon zest (½ lemon, optional): A little zip that wakes everything up, especially if you went heavy on the red pepper.

Instructions

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Start with the aromatics:
Heat olive oil in a large deep skillet over medium heat and add the chopped red onion. Let it cook for 2 to 3 minutes until it turns soft and translucent, stirring occasionally so it doesnt stick.
Build the base:
Toss in the minced garlic and sliced red bell pepper, stirring for about 2 minutes until the garlic smells warm and the pepper starts to soften. If the garlic begins to brown, lower the heat a notch.
Add everything at once:
Pour in the diced tomatoes with all their juices, then add the pasta, water or broth, Italian seasoning, red pepper flakes, smoked paprika, salt, and black pepper. Stir it all together so the pasta is mostly submerged and nothing clumps up.
Simmer and stir:
Bring the pot to a boil, then reduce the heat to a steady simmer. Cook uncovered for 12 to 14 minutes, stirring every few minutes to keep the pasta from sticking and to help it absorb the liquid evenly.
Finish with cheese and zest:
When the pasta is al dente and most of the liquid has been absorbed, remove the pot from the heat. Stir in the grated Parmesan and lemon zest if youre using it, then taste and adjust the salt or red pepper if needed.
Serve it hot:
Divide the pasta into bowls and top with fresh parsley or basil and extra Parmesan. Eat it right away while its steaming.
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A steaming bowl of One-Pot Diavola Spicy Pasta, smelling of Italian herbs and garlic. Save
A steaming bowl of One-Pot Diavola Spicy Pasta, smelling of Italian herbs and garlic. | milestonepan.com

One night I made this after a long day and ate it standing at the counter, bowl in one hand and a glass of cold water in the other, because the heat caught up with me faster than I expected. My partner walked in and said the whole apartment smelled like an Italian grandmas kitchen, and I didnt have the heart to tell them I had just dumped everything in a pot and hoped for the best.

How to Adjust the Heat

If youre not sure how spicy you want it, start with 1 teaspoon of red pepper flakes and taste the sauce before you add the pasta. You can always stir in more at the end, but if you go too far, a spoonful of cream or an extra handful of Parmesan will calm it down without losing the flavor.

Making It a Full Meal

This pasta is filling on its own, but if you want to stretch it or add protein, stir in sliced cooked chicken sausage, sauteed shrimp, or even canned white beans in the last few minutes of cooking. A side of crusty bread and a simple green salad with lemon vinaigrette rounds it out without much extra effort.

Storage and Leftovers

Let the pasta cool completely, then store it in an airtight container in the fridge for up to 3 days. Reheat it gently on the stove with a splash of water or broth to loosen the sauce, because it thickens as it sits. The flavors deepen overnight, so leftovers often taste even better than the first serving.

  • If the pasta seems dry after reheating, stir in a drizzle of olive oil or a spoonful of tomato sauce.
  • This doesnt freeze well because the pasta texture changes, so plan to eat it within a few days.
  • Cold leftovers straight from the fridge are surprisingly good if youre in a hurry.
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Bright red One-Pot Diavola Spicy Pasta, with a dusting of fresh parsley ready for dinner. Save
Bright red One-Pot Diavola Spicy Pasta, with a dusting of fresh parsley ready for dinner. | milestonepan.com

This is the kind of recipe you make on a weeknight when you want something that feels special but doesnt ask much of you. Keep a box of pasta and a can of tomatoes around, and youll always have a way to turn a regular evening into something warm and a little bit fiery.

Recipe FAQs

What pasta types work best for this dish?

Penne or rigatoni hold the sauce well and maintain texture during cooking, making them ideal choices.

Can I adjust the spice level?

Yes, reduce or increase crushed red pepper flakes to match your preferred heat intensity.

Is there a vegetarian option?

The dish is vegetarian by default; for vegan, substitute Parmesan with nutritional yeast.

How do I prevent the pasta from sticking?

Stir frequently during simmering to keep the pasta from clumping and ensure even cooking.

Can I add protein to this dish?

You can incorporate cooked chicken sausage or sautéed shrimp after cooking to enhance protein content.

What’s a good beverage pairing?

A crisp Italian white like Pinot Grigio complements the spicy and herbaceous flavors nicely.

One-Pot Diavola Spicy Pasta

A spicy, herb-infused pasta cooked all in one pot for quick, vibrant Italian-inspired taste.

Prep Time
10 min
Time to Cook
20 min
Time Needed
30 min
Created by Caleb Barnes


Skill Level Easy

Cuisine Italian

Servings Yielded 4 Number of Servings

Special Diets Meatless

What You'll Need

Pasta

01 12 ounces 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 ounces canned diced tomatoes

Seasonings

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

Finishing Touches

01 ⅓ cup grated Parmesan cheese, plus extra for serving
02 2 tablespoons 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 the 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, cooking for an additional 2 minutes until fragrant.

Step 03

Combine Ingredients: Add diced tomatoes with their juices, penne or rigatoni, 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 mixture to a boil, then reduce heat to a simmer. Cook uncovered for 12 to 14 minutes, stirring frequently, until pasta is al dente and most liquid is absorbed.

Step 05

Incorporate Finishing Touches: Remove from heat and stir in grated Parmesan cheese and lemon zest, if using. Adjust seasoning as needed.

Step 06

Serve: Plate the pasta and garnish with chopped fresh parsley or basil and additional Parmesan cheese as desired.

Tools Needed

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

Allergen Details

Review each ingredient for allergens and speak with your healthcare provider if you have questions.
  • Contains milk (Parmesan cheese) and wheat (pasta).
  • For dairy-free option, use vegan cheese; for gluten-free option, substitute gluten-free pasta.

Nutrition (per serving)

For informational use only. Always consult with a health professional if needed.
  • Calorie Count: 370
  • Fats: 8 g
  • Carbohydrates: 62 g
  • Proteins: 13 g