Preheat oven to 350F. Line a baking sheet with parchment paper.
In a large bowl whisk the eggs together. Add the sugars, optional vanilla and shortening and mix to combine breaking down the shortening with the fork to ripples or small pieces throughout the sugar and egg mixture.
Add the flour, baking soda and salt. Mix until just combined.
Add in the oatmeal mix until oatmeal is evenly dispersed throughout the cookie batter.
Roll a heaping teaspoon full into balls and 12 balls evenly on the baking sheet. Use the back of the spoon to flatten them to about a 1/2" thickness.
Bake for about 7 minutes or until they are starting to turn golden brown. Remove from the oven and let them rest for a minute before transferring them with a spatula to a cooling rack to cool.
Video
Notes
Storage:Store raw cookie dough tightly wrapped in plastic for up to 3 months. Baked cookies in a sealed container at room temperature for up to 5 days or freeze in a sealed container for up to 3 months.Additinal Tips:
Bake cookies on parchment paper. This keeps the sugar from sticking. I have a clay baking sheet so nothing seems to stick but even then I have to be careful. I started without parchment and on the second batch added a sheet.
Let the cookies cool on the baking sheet for a minute. Then you can transfer them to a cooling rack. These cookies are fragile and will break apart easily or fall out of shape when they are too hot to move.
Variations:Feeling fancy? Need a change? Here are some of my favourite ways to jazz up these old-fashioned oatmeal cookies. Just add in about a cup of any of these: Chocolate chips, raisins, dried cranberries, butterscotch bits, white chocolate chips or chopped dates.