Cheapest "good" foods to gain weight?

Anonymous
I'm a mesomorphic body type and I tend to put on muscle fairely easy but always feel hungry, I want to gain weight but I'm a student at the moment and can't really afford to pay for such expensive foods but I don't particularly want to gain weight through junk food.

Can people name some of the cheapest foods you can (relative to how capable it would be of helping me pack on more weight) I am currently 6'0 and 180 but feel I am a bit skinny for the build I am. It would be helpful if you can name the nutrition from it too if you like it would be appreciated :)

anyway thanks
Updates
+1 y
It would be awesome if people could give me some recipes with the cheap food they are naming too :)

(doesn't have to be complex, just some good cominations and how to make it)
Cheapest "good" foods to gain weight?
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