Created by KittenCal on September 24, 2011
Step 1: Preheat oven to 350 degrees F (oven rack set to second-lowest position).
Step 2: Grease a 13 x 9-inch baking pan.
Step 3: In a large bowl using an electric mixer at medium speed cream butter with both sugars and vanilla; beat until no sugar granules remain (about 4 minutes).
Step 4: Add in peanut butter; beat until combined.
Step 5: Beat in eggs until well combined.
Step 6: In a small bowl combine flour with baking soda and oats then add to the creamed mixture then beat on low speed until combined (batter will be quite thick).
Step 7: Mix in chocolate chips.
Step 8: Transfer to prepared baking pan and spread out using a spoon.
Step 9: Bake for 22-25 minutes (do not overbake).
Step 10: Cool then cut into bars.