These delicious Monster Cookies are easy to make and taste amazing! Most of these items you already have in your pantry for the best monster cookie recipe.
Line cookie sheets with parchment paper or use a baking mat.
In a large mixing bowl, combine 3 eggs, 1¼ cups brown sugar, 1 cup sugar, 12 ounces peanut butter, ½ cup softened butter, ½ teaspoon salt, ½ teaspoon vanilla, and 2 teaspoons baking soda.
Stir in 1½ cups M&M's, 1 cup semi sweet chocolate chips, and 4½ cups quick oats.
Place about tablespoon size chunks on the prepared sheets several inches apart.
Bake for about 9 minutes.
Leave on cookie sheet for about 3 minutes before moving to rack to cool completely.