Mix all the DRY ingredients together in a bowl.  Mix well.

Add the butter/oil and vanilla in.

It is important that the eggs be added last. I have no idea why but the cookies always come out much better when the eggs are added last.

Dough should be very lumpy and sticky. If it's not, add a little more dry oatmeal.

Either line a cookie sheet with aluminum foil, or spray a cookie sheet with spray oil. Drop teaspoons of cookie dough about two inches apart because these cookies spread. 

Bake in 350 degree oven from 8 - 15 minutes depending on how crunchy you like your cookies. I like them very crunchy, so I leave them in between 13-15 minutes sometimes.  Otherwise after about 8 - 10 minutes they will appear to be puffy, take them out and let them cool for a few minutes before you take them off the cookie sheet. They should be very crunchy. If they're not, add more oil. 

Enjoy.