If you click through to the Pumpkin Bread recipe at Smitten Kitchen that this writer says was the inspiration for their own pumpkin bread, you'll see that that recipe calls for 1 and 3/4 cups of pureed pumpkin. It says this IS a whole can, so I guess the size of the cans varies. In fact, I know it does, anywhere from 14 to 16 ounces.

P.