peanuts means: this food in the picture. It is also slang for a small amount of money. For example: They work for peanuts. or: It cost peanuts. The opposite would be: It cost an arm and a leg.
This blog is mainly to explain a different English language expression every day. Sometimes I post other stuff. I also have a YouTube channel which is mostly about computer software: https://www.youtube.com/englishspacedog
