One-Pot Diavola Spicy Pasta

Featured in: One-Pot Home Meals

This vibrant one-pot pasta blends penne and aromatic Italian seasonings with a spicy kick from red pepper flakes and smoked paprika. Fresh vegetables like red onion, garlic, and bell pepper add depth while simmering in tomato sauce creates a rich, hearty base. Finished with Parmesan and fresh herbs, it’s a quick, flavorful dish perfect for a satisfying weeknight meal with minimal cleanup.

Updated on Fri, 19 Dec 2025 12:40:00 GMT
One-Pot Diavola Spicy Pasta simmering in a large pot, with vibrant red sauce and penne noodles. Save to Pinterest
One-Pot Diavola Spicy Pasta simmering in a large pot, with vibrant red sauce and penne noodles. | amberkettle.com

I stumbled on this recipe during a weeknight meltdown when I had too many pots simmering and not enough counter space. The idea of dumping everything into one pan sounded reckless, but desperation breeds genius. What emerged was this fiery, fragrant tangle of pasta that tasted like I'd spent hours layering flavors. The kitchen smelled like a trattoria, and I never looked back.

I made this for a friend who swore she didnt like spicy food. Halfway through her second bowl, she paused with a forkful in midair and admitted maybe she just hadnt met the right kind of heat yet. We sat on my tiny balcony with our bowls balanced on our knees, and she kept reaching for more Parmesan like it was a dare. That night turned into a tradition.

Ingredients

  • Penne or rigatoni: The ridges and hollows catch every bit of sauce, and their sturdy shape holds up to simmering without turning mushy.
  • Water or vegetable broth: Broth adds a subtle savory backbone, but water works beautifully if thats what you have on hand.
  • Red onion: It softens into sweet little threads that balance the chili heat in a way yellow onions cant quite match.
  • Garlic cloves: Minced fine so they melt into the sauce, releasing that warm, almost nutty aroma that makes your kitchen feel alive.
  • Red bell pepper: Adds a pop of color and a gentle sweetness that tempers the fire without stealing the spotlight.
  • Canned diced tomatoes: The backbone of the sauce, bringing acidity and body; I always use the kind with juices for extra sauciness.
  • Olive oil: A good glug at the start creates the base for all those aromatics to bloom.
  • Italian seasoning: This dried herb blend does the heavy lifting, filling in the gaps with oregano, basil, and thyme notes.
  • Crushed red pepper flakes: The star of the show, delivering that slow-building warmth that creeps up on you with each bite.
  • Smoked paprika: Adds a whisper of smokiness that makes the whole dish taste like it came off a wood-fired stove.
  • Salt and black pepper: Essential for coaxing out every other flavor hiding in the pot.
  • Parmesan cheese: Stir it in at the end for a creamy, salty finish that clings to every noodle.
  • Fresh parsley or basil: A handful of green brightness that cuts through the richness right before serving.
  • Lemon zest: Optional but transformative, it lifts the whole dish with a burst of citrus that feels like a secret weapon.

Instructions

Soften the onion:
Heat the olive oil over medium flame until it shimmers, then add the chopped red onion and let it cook until the edges turn translucent and the kitchen starts to smell sweet. This takes about two or three minutes, and youll know its ready when the rawness fades.
Wake up the garlic and pepper:
Toss in the minced garlic and sliced bell pepper, stirring them around until the garlic turns fragrant and the pepper softens just a bit. Two minutes is all you need before everything starts to meld together.
Build the base:
Pour in the canned tomatoes with all their juices, then add the uncooked pasta, water or broth, Italian seasoning, red pepper flakes, smoked paprika, salt, and black pepper. Stir everything so the pasta is mostly submerged and the spices are evenly distributed.
Simmer and stir:
Bring the whole pot to a rolling boil, then dial the heat down to a gentle simmer and leave it uncovered. Stir frequently so nothing sticks to the bottom, and watch as the pasta drinks up the liquid and turns tender over twelve to fourteen minutes.
Finish with richness:
Pull the pot off the heat and fold in the grated Parmesan and lemon zest if youre using it. Taste and tweak the salt or pepper until it sings to you.
Serve with flair:
Spoon the pasta into bowls while its still steaming, then scatter fresh parsley or basil over the top and pass around extra Parmesan. This is the moment where everyone leans in and breathes deep.
Steaming One-Pot Diavola Spicy Pasta with a sprinkle of Parmesan, ready for a satisfying Italian meal. Save to Pinterest
Steaming One-Pot Diavola Spicy Pasta with a sprinkle of Parmesan, ready for a satisfying Italian meal. | amberkettle.com

One winter evening I doubled the batch and brought it to a potluck where everyone was supposed to bring something impressive. I watched people go back for seconds and thirds, scraping the edges of the pot with their forks, and someone asked if I had a culinary degree. I just laughed and said no, I have a really good skillet and no patience for washing extra dishes.

Making It Your Own

If you want protein, sliced cooked chicken sausage or sauteed shrimp folded in at the end turns this into a heartier meal without losing the one-pot magic. For a vegan spin, swap the Parmesan for nutritional yeast and youll still get that savory, cheesy note. You can also dial the heat up or down by adjusting the red pepper flakes, and if you like things smoky, an extra pinch of smoked paprika does wonders.

Pairing and Serving

This pasta begs for a crisp, cold Pinot Grigio or a sparkling water with a fat wedge of lemon if youre keeping it alcohol-free. I like to serve it straight from the pot at the table, family-style, with a big bowl of extra Parmesan and some crusty bread for mopping up the sauce. It also reheats beautifully the next day, sometimes tasting even better once all the flavors have had a chance to settle in together.

Storage and Leftovers

Let any leftovers cool completely before transferring them to an airtight container, and theyll keep in the fridge for up to three days. When you reheat, add a splash of water or broth to loosen the sauce because the pasta keeps soaking up moisture even after cooking. I usually warm it gently in a skillet over low heat, stirring until its heated through and glossy again.

  • Avoid freezing this dish because the pasta texture gets mushy when thawed.
  • If you know youll have leftovers, slightly undercook the pasta so it doesnt turn too soft during reheating.
  • Top reheated portions with a handful of fresh herbs to bring back that just-made brightness.
Close-up of One-Pot Diavola Spicy Pasta with red pepper flakes, showcasing its delicious, fiery flavors. Save to Pinterest
Close-up of One-Pot Diavola Spicy Pasta with red pepper flakes, showcasing its delicious, fiery flavors. | amberkettle.com

This recipe taught me that convenience and flavor dont have to be enemies, and that sometimes the best meals are the ones that leave you with only one pot to scrub. I hope it becomes a staple in your kitchen the way it has in mine.

Recipe FAQs

What type of pasta works best for this dish?

Penne or rigatoni holds the sauce well and cooks evenly in this one-pot preparation.

Can I adjust the spice level?

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

Is there a vegetarian option?

Absolutely, the dish is naturally vegetarian, and you can omit or replace cheese with nutritional yeast for vegan preferences.

How do I make this gluten-free?

Swap traditional pasta with gluten-free varieties ensuring similar cooking times for best results.

Can I add protein to this meal?

Enhance by stirring in cooked chicken sausage or shrimp just before serving for added protein.

One-Pot Diavola Spicy Pasta

Spicy Italian pasta with red pepper flakes, tomatoes, and fresh herbs cooked all in one pot.

Prep duration
10 min
Time to cook
20 min
Total duration
30 min
Created by Molly Easton


Skill level Easy

Cuisine Italian

Makes 4 Portions

Dietary details Meat-free

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 with juices

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)

Directions

Step 01

Sauté onion: 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 2 additional minutes until fragrant.

Step 03

Combine core ingredients: Add canned diced tomatoes with 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 mixture: 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 finishing touches: Remove from heat and stir in grated Parmesan cheese and optional lemon zest. Adjust seasoning to preference.

Step 06

Serve garnished: Serve immediately, garnished with chopped fresh parsley or basil and extra Parmesan as desired.

Equipment needed

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

Allergy details

Be sure to look at every ingredient. If you have concerns, ask your healthcare provider.
  • Contains milk (Parmesan cheese) and wheat (pasta). Use vegan cheese and gluten-free pasta to accommodate intolerances.

Nutrition Info (one portion)

Information shown is for general reference. Please speak to your doctor for nutrition advice.
  • Energy: 370
  • Lipids: 8 g
  • Carbohydrates: 62 g
  • Proteins: 13 g