My lunch

Today's topic is "Lunch."  (if we are going to use a capital letter and make this a title, it may look a little better in inverted commas.)
Sometimes I make a stew with lots of vegetables. I make small portions and keep them in the refrigerator.
You know, it's very easy to make a stew because you just stir the ingredients, and add some water and stew paste. That's all.
I take it to school and eat it for lunch, after heating it up in a microwave.
It's cheaper and healthier than eating food bought at a store (or shop, in British English).

What do you like eating for lunch?

Thank you for reading. Could you correct my sentences? Are there any other ways to say this? If you'd like, please teach me. Thanks.