In a pan heat olive oil, then add chopped onions and let it cook for few seconds.

Add finely chopped garlic and saute them.

Then add chopped tomatoes to the above ingredients and let it cook at least 7 to 8 minutes.

Add tomato ketchup, fresh spinach, dried oregano, basil, and red chilli flakes and stir well.

Then add cheese and salt and mix well.

Add boiled pasta to the sauce and stir well.