Preheat oven to directions on the crescent roll dough.
Unroll the crescent roll dough until it is flat.
Spread the cream cheese in a medium-thickness, even layer over the dough.
Sprinkle frozen spinach liberally on top of the cream cheese.
Roll the dough back together tightly, smooth edges of dough to keep any cracks from forming. Once rolled, slice into even pieces, smooth edges again. *To make slicing easier, you can put roll the dough into some foil and put it in the freezer for 10 minutes or so.
Place slices on an ungreased cookie sheet, and bake according to directions on the dough package. Remove, let cool, and watch them disappear!