One-Pot Diavola Spicy Pasta

Featured in: Everyday Mains

This one-pot Diavola pasta combines penne with a vibrant mix of Italian herbs, red pepper flakes, and smoked paprika. Sauteed onion, garlic, and red bell pepper are simmered with diced tomatoes and pasta until perfectly tender. Finished with a sprinkle of Parmesan and fresh herbs, this easy dish balances heat and bright flavors for a satisfying meal. Variations include adding cooked sausage or shrimp for extra protein, or using vegan cheese for a dairy-free twist.

Updated on Sun, 21 Dec 2025 15:28:00 GMT
Steaming hot One-Pot Diavola Spicy Pasta, perfectly cooked with a vibrant red hue from tomatoes. Save
Steaming hot One-Pot Diavola Spicy Pasta, perfectly cooked with a vibrant red hue from tomatoes. | pixelcuisine.com

I stumbled on this one-pot wonder late one Tuesday after work, too hungry to wait and too tired to face a pile of dishes. I threw everything into one pan, cranked up the heat, and watched the pasta soak up all that spicy, garlicky broth while I leaned against the counter with a glass of wine. The smell alone—tomatoes bubbling with red pepper and smoked paprika—made my neighbors knock and ask what I was making. It's become my weeknight rescue ever since.

The first time I made this for friends, I doubled the red pepper flakes by accident and we all ended up laughing through watery eyes, passing around extra Parmesan like a peace offering. One of them still texts me asking for the spicy pasta whenever she has a bad day. It's funny how a simple mistake turned into the thing people remember most about a meal.

Ingredients

  • Penne or rigatoni: I like ridged pasta because it grabs onto the sauce and holds every fleck of red pepper and herb in its grooves.
  • Vegetable broth or water: Broth adds a deeper, savory backbone, but water works perfectly fine if that's what you have on hand.
  • Red onion: It softens into sweet little ribbons that balance out all that heat and acidity from the tomatoes.
  • Garlic cloves: Fresh garlic blooms in the oil and perfumes the whole dish, don't skip this step or use jarred if you can help it.
  • Red bell pepper: Adds a gentle sweetness and a pop of color that makes the whole pan look alive.
  • Canned diced tomatoes: Use the kind with juices included, that liquid is pure gold for building the sauce as the pasta cooks.
  • Olive oil: A good fruity olive oil at the start sets the tone for everything that follows.
  • Italian seasoning: A blend of oregano, basil, and thyme that pulls the whole dish toward classic Italian comfort.
  • Crushed red pepper flakes: This is where the diavola fire lives, start with less if you're cautious and taste as you go.
  • Smoked paprika: It whispers a hint of smokiness without overwhelming the bright tomato base.
  • Salt and black pepper: Season with intention, tasting near the end so the Parmesan doesn't make it too salty.
  • Parmesan cheese: Stir it in at the end and it melts into creamy little pockets that cling to every noodle.
  • Fresh parsley or basil: A handful of green at the finish makes it feel fresh and restaurant worthy.
  • Lemon zest: Optional but magical, it brightens the whole dish and cuts through the richness with a sunny edge.

Instructions

Start with the aromatics:
Warm the olive oil in a large deep skillet over medium heat and toss in the chopped red onion, letting it soften and turn translucent for about three minutes. Add the garlic and sliced bell pepper, stirring until your kitchen smells like an Italian grandmother just walked in.
Build the base:
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. Give it a good stir so nothing sticks to the bottom and every piece of pasta gets coated.
Simmer and stir:
Bring the whole pot to a boil, then lower the heat to a gentle simmer and cook uncovered for twelve to fourteen minutes, stirring every few minutes so the pasta cooks evenly and the liquid reduces into a thick, clingy sauce. The pasta should be al dente and most of the liquid absorbed when you're done.
Finish with richness:
Pull the pan off the heat and stir in the grated Parmesan and lemon zest if you're using it, letting the cheese melt into silky threads. Taste and adjust the salt, pepper, or heat to your liking.
Serve it hot:
Spoon the pasta into bowls and scatter fresh parsley or basil over the top, adding extra Parmesan for anyone who wants it. Serve immediately while it's steaming and fragrant.
Close-up of One-Pot Diavola Spicy Pasta garnished with fresh parsley and Parmesan cheese, ready to serve. Save
Close-up of One-Pot Diavola Spicy Pasta garnished with fresh parsley and Parmesan cheese, ready to serve. | pixelcuisine.com

I made this on a cold January night when my sister came over unannounced, chilled and grumpy from a long commute. She sat at my tiny kitchen table, warmed her hands on the bowl, and told me it was exactly what she needed. We didn't talk much, just ate and listened to the rain, and I realized that sometimes the best meals are the ones that don't ask for anything but your presence.

Making It Your Own

If you want more protein, toss in sliced cooked chicken sausage or sautéed shrimp right before you stir in the Parmesan. I've also stirred in a handful of baby spinach at the end, letting it wilt into the sauce for a little extra green. For a vegan spin, swap the Parmesan for nutritional yeast and use a good vegetable broth to keep the flavor deep and savory.

What to Serve Alongside

A crisp green salad with lemon vinaigrette is all you need to balance the heat, though a hunk of crusty bread for soaking up the last bits of sauce never hurts. I like to pour a chilled Pinot Grigio or a sparkling water with a squeeze of lemon to keep things light and refreshing. Sometimes I'll roast a pan of broccolini with garlic and olive oil if I want another vegetable on the table.

Storage and Reheating

Leftovers keep well in an airtight container in the fridge for up to three days, though the pasta will absorb more of the sauce as it sits. When you reheat it, add a splash of broth or water to loosen things up and bring back that saucy consistency. I usually warm it gently in a skillet over medium low heat, stirring often, but the microwave works too if you're in a hurry.

  • Store in a sealed container and refrigerate within two hours of cooking.
  • Reheat gently with a little extra liquid to revive the sauce.
  • This doesn't freeze perfectly because the pasta can get mushy, so enjoy it fresh or within a few days.
A bubbling skillet of savory One-Pot Diavola Spicy Pasta filled with pasta and bell peppers. Save
A bubbling skillet of savory One-Pot Diavola Spicy Pasta filled with pasta and bell peppers. | pixelcuisine.com

This is the kind of dinner that feels like a hug after a long day, bold and comforting without any fuss. Make it once and it'll earn a permanent spot in your weeknight rotation.

Recipe Questions & Answers

What pasta types work best for this dish?

Penne or rigatoni are ideal as they hold sauce well and maintain texture during cooking.

Can I adjust the spice level?

Yes, modify the crushed red pepper flakes quantity to suit your preferred heat intensity.

Is there a way to make it vegan?

Replace Parmesan with nutritional yeast or a plant-based cheese alternative for a vegan version.

What cooking equipment is recommended?

A large deep skillet or Dutch oven works best to cook all ingredients evenly in one pot.

Can this dish be made gluten-free?

Use gluten-free pasta to accommodate gluten sensitivities without altering flavors.

How to add protein to this meal?

Stir in cooked chicken sausage or sautéed shrimp at the end for an extra protein boost.

One-Pot Diavola Spicy Pasta

Fiery Italian pasta with red pepper flakes, herbs, and tomato, cooked together in one pot for rich flavors.

Prep Duration
10 minutes
Time to Cook
20 minutes
Overall Time
30 minutes
Created by Ryan Cooper


Skill Level Easy

Cuisine Type Italian

Output 4 Number of Servings

Diet Preferences Meat-Free

What You'll Need

Pasta

01 12 oz penne or rigatoni pasta
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, adjust to taste
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 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 an additional 2 minutes until fragrant.

Step 03

Combine Main Ingredients: Add canned diced tomatoes with juices, penne or rigatoni 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 to a simmer. Cook uncovered for 12 to 14 minutes, stirring frequently, until pasta is al dente and most liquid has evaporated.

Step 05

Finish and Season: Remove from heat. Stir in grated Parmesan cheese and optional lemon zest. Adjust seasoning as needed.

Step 06

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

Tools Needed

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

Allergy Info

Review every item for allergens and ask a healthcare pro if you're unsure.
  • Contains milk (Parmesan cheese) and wheat (pasta). Use vegan cheese and gluten-free pasta as alternatives.

Nutrition Details (each serving)

Nutrition info is for reference only—it's not medical guidance.
  • Caloric Content: 370
  • Fats: 8 g
  • Carbohydrates: 62 g
  • Proteins: 13 g