1. Preheat the oven to 350 degrees fahrenheit. Line a baking sheet with parchment paper and set to the side.
2. In a large bowl, whisk together flour, baking soda and salt and set aside.
3. Using a stand or electric mixer, beat the butter and sugar on medium speed until creamy. Once combined, add eggs one at a time and mix.
4. Slowly add the dry ingredients to the wet ingredients and turn the mixer on low until combined.
5. Add chocolate chips, M&Ms and sprinkles. Stir with a rubber spatula until mixed thoroughly.
6. Use a cookie scoop to make even dough balls and place them on the prepared baking sheet. Dip the balls in the reserved Christmas sprinkles.
7. Bake for 10-12 minutes at 350 degrees f, or until slightly golden and the top of the cookie is set.
8. Allow to cool on the baking sheet for five minutes then transfer the baked cookies to a wire rack to cool completely.