In a mixer, beat the shortening and sugars together on medium, for about 3 minutes.
Add the eggs, one at a time, mixing in between.
Add the vanilla and beat until mixed.
In a large bowl, whisk together the oats, flour, baking powder, baking soda, and nutmeg.
Add in heaping cupful's at a time to the wet mixture, beating until just blended.
Divide in half and form into logs, wrap in saran wrap, and refrigerate for 24 hours.
Slice into approximately 1/4 inch slices and place well far apart. These cookies SPREAD OUT!
Bake in an oven pre-heated to 350F and bake for 15 minutes or bake in a Ninja 8-in-1 at 325F for 7 minutes, turning the pan around and baking for an additional 7-8 minutes.
