Preheat oven to 350 degrees. In a large bowl beat the peanut butter and the butter together until smooth and creamy. Add the brown sugar, granulated sugar and the baking soda and beat until well combined. Beat in the eggs one at a time just until combined. Beat in the vanilla. Beat in the flour. Using a large spoon stir in the oats. Add the chocolate chips and stir, then add the M&M’s and stir.

Drop rounded tablespoons 2 inches apart onto cookie sheet. Bake for 9 to 11 minutes, or until edges are lightly brown. The tops will look a little under-cooked. Cool on the cookie sheet for about 10 minutes before transferring to a wire rack to completely cool.