Preheat the oven to 350 degrees.
Line a cookie sheet with parchment paper or use silicone mat.
In a large bowl, combine eggs, vanilla, salt, sugar, brown sugar and baking soda. Mix until combined.
Add in peanut butter, and butter. Mix until well incorporated.
Fold in the oatmeal, chocolate chips and M&M's.
For monster sized cookies, use a tablespoon to place dough on the prepared sheets several inches apart.
Bake for about 9 minutes.
Do not remove from cookie sheet for about 3 minutes. Then transfer to rack to finish cooling.
