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Easy 20-Minute One-Pot Spaghetti Recipe for Busy Weeknight Dinners

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A quick and easy one-pot spaghetti recipe perfect for busy weeknights, using simple pantry staples and minimal cleanup.

Ingredients

Scale
  • 8 ounces (225g) dried spaghetti, broken in half
  • 2 tablespoons extra virgin olive oil
  • 3 cloves garlic, minced
  • 1 small yellow onion, finely chopped
  • 1 can (28 ounces / 800g) crushed tomatoes
  • 3 cups (720ml) water or chicken/vegetable broth
  • 1 teaspoon Italian seasoning (dried basil, oregano, thyme mix)
  • ΒΌ teaspoon red pepper flakes (optional)
  • Salt and pepper to taste
  • Β½ cup (about 50g) grated Parmesan cheese, plus more for serving
  • A handful fresh basil, chopped (optional)

Instructions

  1. Place a large skillet or pot over medium heat and add 2 tablespoons olive oil. Warm for about 1 minute until shimmering but not smoking.
  2. Add minced garlic and chopped onion. Cook for 3 to 4 minutes, stirring occasionally, until onion is translucent and fragrant. Avoid burning the garlic.
  3. Pour in the crushed tomatoes and 3 cups water or broth. Stir in Italian seasoning and red pepper flakes if using. Bring to a gentle simmer.
  4. Break spaghetti in half and add to the pot, pressing it down so mostly submerged.
  5. Reduce heat to medium-low and cook uncovered for 12 to 15 minutes, stirring every few minutes to prevent sticking. Add a splash of water if liquid gets too low before pasta is tender.
  6. Taste pasta around 12 minutes for al dente texture; cook longer if needed.
  7. Remove from heat and stir in Β½ cup grated Parmesan cheese until melted and creamy. Season with salt and pepper to taste.
  8. Garnish with chopped fresh basil and extra Parmesan if desired. Serve hot.

Notes

Stir gently but regularly to prevent pasta from sticking or breaking. Use broth instead of water for extra flavor. Parmesan cheese helps thicken the sauce and adds creaminess. For vegan version, omit Parmesan or use dairy-free cheese. Leftovers can be refrigerated up to 3 days or frozen. Add veggies or proteins for variations.

Nutrition

Keywords: one-pot spaghetti, quick dinner, easy pasta recipe, weeknight meal, simple spaghetti, one-pot meal, busy night dinner