1 Medium Onion Equals How Many Cups. This indicates that one medium onion, roughly the size of a turnip, may provide 3 tablespoons of dried minced onion, and 3 tablespoons of dried minced onion weigh 8 pounds. You will need one and a half cups of minced onion to equivilate to one.

How many cups is a small onion? What is considered a small onion? You will need one and a half cups of minced onion to equivilate to one.