Preheat oven to 375 degrees. Grease a cookie sheet and set aside.

In a medium bowl, whisk together the flour, baking soda, and salt.

In a large bowl with hand mixer or bowl of a stand mixer, combine butter, granulated sugar, and brown sugar.

Whisk together until creamy, about 3 minutes.

Add in the eggs and vanilla one at a time, mixing after each addition.

Slowly pour the dry ingredients into the wet ingredients and mix until fullly combined.

Fold in the chocolate chips and 1 cup of the M&Ms.

Take heaping tablespoons of the halloween cookie dough and roll into balls.

Arrange cookie dough balls onto prepared cookie sheet, aproximately 2 inches apart.

Please 2-3 of the remaining M&Ms on top of each cookie dough ball.

Bake for 9 minutes, just until the edges are browned.

Let cookies cool on cookie sheet for 1 minute and then carefully transfer to a cooling rack until fully cool.

Repeat with remaining cookie dough.