Step 1

Preheat oven to 350 degrees F (175 degrees C).

Step 2

In a large bowl, cream together shortening, margarine, brown sugar, white sugar, and peanut butter until smooth. Beat in the eggs one at a time until well blended. Combine the flour, baking soda, and salt; stir into the creamed mixture. Mix in the oats until just combined. Drop by teaspoonfuls onto ungreased cookie sheets.

Step 3

Bake for 10 to 15 minutes in the preheated oven, or until just light brown. Don't over-bake. Cool and store in an airtight container.