Since there is a large gamma of high quality restaurants and fast food places in Amsterdam ; while in longer holidays periods eating in restaurants can be very expensive.
First of all if you are staying in a place with a kitchen, then a perfect option to save money and prepare great meals. Furthermore there are supermarkets in Amsterdam almost in every corner, and the prices are quite good in general. Finally A meal for 2 can cost you no more than 5 euro or less for a microwave meal; probably if you are looking for great ideas for dinner recipes check out the site of BCC : https://www.bbcgoodfood.com/recipes/category/dinner-ideas-0
Supermarkets in Amsterdam are
For a long time, Albert Heijn has been the store for everyone in Amsterdam. As the most established existing grocery store chain in the Netherlands; 20 locations are in the center of the city; and many more in the country.
Jumbo has been around for over 95 years. In addition the privately-run company from Veghel started from a discount exchange pilgrim merchandise, established in 1921. Nowadays has becomed the second largest supermarket chain in the Netherlands.
Jumbo Amsterdam Westerstraat
and Jumbo Amsterdam Stadhouderskade