In a microwave-safe bowl, add the finely chopped tomatoes and microwave them for 1 minute.
Take it out and mash it and add sugar and mix well.
Again microwave for 2 to 3 minutes and mix well. Make sure to stir for every one minute.
You need to microwave till the tomatoes are soft and mushy. I microwave for a total of 3 minutes and 30 seconds.
Video
Notes
Depending upon the microwave, the time may vary. As I mentioned, you have to microwave till the tomatoes blends together and become soft and mushy.
Make sure you stir for every 1 minute.
You can cook for some more time until 90% of the water is absorbed and then use it as a spread or jam. In that case, you can add cardamom powder or a bit of vanilla essence for added flavor.