Creating Christmas Monster Cookies is easy and fun. Follow these simple steps to bring the festive spirit to your kitchen:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and line baking sheets with parchment paper.
2. Cream Butter and Sugars: In a large mixing bowl, combine the softened butter, brown sugar, and granulated sugar. Beat until creamy and well combined.
3. Add Peanut Butter: Mix in the peanut butter until smooth and fully integrated with the butter and sugars.
4. Incorporate Eggs and Vanilla: Add the eggs one at a time, mixing well after each addition. Add the vanilla extract and mix until combined.
5. Combine Dry Ingredients: In a separate bowl, whisk together the oats, flour, baking soda, and salt.
6. Mix Dry into Wet: Gradually add the dry mixture into the wet mixture, stirring until just combined. Be careful not to overmix.
7. Fold in M&M’s and Chocolate Chips: Gently fold in the M&M’s and chocolate chips, ensuring they are evenly distributed throughout the dough.
8. Scoop the Dough: Using a cookie scoop or tablespoon, drop mounds of dough onto the prepared baking sheets, spacing them about 2 inches apart.
9. Bake: Place the baking sheets in the preheated oven and bake for 12-15 minutes or until the edges are golden and the centers are set.
10. Cool Cookies: Remove the cookies from the oven and allow them to cool on the baking sheets for about 10 minutes before transferring them to wire racks to cool completely.

These steps will guide you in creating incredible Christmas Monster Cookies that are sure to delight!