Go Back
+ servings
Ketchup Spaghetti

Ketchup Spaghetti

This ketchup spaghetti recipe, known as Spaghetti Naporitan, is a popular pasta dish in Japan which uses ketchup as the main ingredient for the spaghetti.
Print Pin
Course: Main Course
Cuisine: Italian
Keyword: ketchup, pasta
Prep Time: 2 minutes
Cook Time: 10 minutes
Total Time: 12 minutes
Servings: 1
Calories: 359kcal


  • Large Pot to boil spaghetti
  • Non-stick Pan
  • Spatula
  • Measuring cups and spoons
  • Knife


  • 2 tbsp ketchup or 3+ tbsp depending on how much ketchup you'd like
  • 1 servings spaghetti or pasta of choice
  • 1 tbsp oil or vegan butter, divided throughout recipe
  • 1/2 onion sliced thinly
  • 1/2 bell pepper sliced thinly
  • 1 tbsp garlic or 2-3 cloves, minced
  • pinch sugar optional


  • Start making your ketchup spaghetti by taking a large pot, bringing plenty of water to a boil and cooking your spaghetti according to instructions. Once cooked, save around 1/4 cup of the pasta water and strain.
  • Heat 1/2 tbsp of oil or vegan butter on a non-stick pan on medium-high heat and add sliced onion and bell pepper on one side. I ended up adding sliced veggie hot dog on the other (or sometimes smoked tofu) and sauté for around 3-4 minutes separately until veggies soften. Feel free to add this too.
  • Mix everything in the pan already and add minced garlic. Sauté for another minute.
  • Add the rest of the oil or vegan butter (another 1/2 tbsp), ketchup and a pinch of sugar (which I find neutralizes the ketchup so you can omit it if you really love ketchup flavour). Mix well.
  • Again, when spaghetti is cooked, save around 1/4 cup of the pasta water, and drain your spaghetti. Add your spaghetti to the pan. Mix well and add a splash of pasta water and mix. Add more if you prefer. Cook together for a couple of minutes.
  • Give it a taste and add more ketchup, if needed, and add salt and pepper to taste.
  • Top your ketchup spaghetti with fresh parsley and cashew parmesan (optional) and enjoy.


Calories: 359kcal | Carbohydrates: 55g | Protein: 9g | Fat: 10g | Saturated Fat: 3g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 4g | Trans Fat: 1g | Sodium: 500mg | Potassium: 367mg | Fiber: 4g | Sugar: 8g | Vitamin A: 2399IU | Vitamin C: 83mg | Calcium: 43mg | Iron: 1mg