Originally posted by: MDE
It's the type of sugar used. Granulated sugar will crystallize and get hard, so use part brown sugar or fructose (or corn syrup should work IIRC).
Granulated sugar really isn't a problem if you beat it enough. The process is called creaming. I usually mix the sugar/shorting for a minimum of 15 minutes before moving to the next step.
Try this recipe:
1 cup vegetable shortning
1 scant cup sugar
1 tsp salt (to taste)
1 scant cup brown sugar
2 eggs
1 tsp baking soda
1 tsp vanilla
2 cups flour
Start by mixing the shortning, sugar and salt. Beat then until smooth. (at least 10 minutes)
Add the brown sugar and again beat until smooth. (5-10 minutes. Depends how rushed you are)
Stir in the eggs. Stir in the baking soda and vanilla. Don't overmix at this point
Stir in the flour. Do as little stiring at this point as you can get away with.
Add whatever flavorings you want at this point. Chocolate chips, oatmeal, raisins, beanutbutter, m&ms, just about anything will do.
Bake at 350 for 8-10 minutes.
Every time I bring these to work people claim they're the best cookies they've ever had. If you like butter flavor cookies you can substitute 1/8-1/4 cup of butter for shortening, but they don't turn out as good.