Preheat the oven to 400.
In a large bowl, cream the sugars and shortening.
Add the beaten eggs and vanilla to the shortening mixture.
Mix thoroughly. In a separate bowl, sift together the salt, baking soda, baking powder, and flour.
Add to the wet mixture.Stir in the cereal and oats.
Roll the dough into walnut sized balls and place 2 inches apart on an ungreased baking sheet. Bake until golden brown around the edges, 10 minutes.Cool and then store in sealed containers, will keep for up to 5 days