1. In a fry pan heat, olive oil and add onion.
  2. Cook for 2 to 3 minutes and don't colour the onion.
  3. Add pancetta, garlic and chilli flakes.
  4. Cook for a further 4 to 5 minutes until pancetta is crispy.
  5. Add tomatoes and bring to the boil. Reduce heat to a simmer and cook for 8 to 10mins.
  6. Cook pasta as per packet directions.
  7. Season with salt and pepper.
  8. Strain pasta and mix through sauce.
  9. To finish sprinkle good amount of pecorino over the top.