Turn on your oven to 350, and line a baking sheet with parchment paper.
Fill a ziplock bag with the original M&Ms and seal shut. Use a rolling pin and wack the M&Ms to roughly crush into smaller pieces. Set aside.
In a mixing bowl add in your softened butter, brown sugar, and granulated sugar. Don't forget to keep scraping down the side of the bowl.
Once you have added in your butter and sugars, give these a mix on medium speed until the mix is nice and creamy.
Once you have gotten the batter mixed, add in a splash of vanilla, and also the 2 room temperature eggs.
Turn on the hand mixer, and get those things mixed, and ready for the dry ingredients.
Go ahead and add in all your dry ingredients to the batter, and mix with your hand mixer.
At then end of mising add in your crushed M&M's that you crushed with rolling pin.
Using a large 2 oz cookie scoop, or 1/4 measuring cup, scoop the dough out onto the baking sheet. Only bake about 4-5 cookies at a time and space them well apart as they spread quite a bit.
Make sure to give your cookies some room, and put them spaced apart onto your parchment paper. 9See post picture for better look)..
Top with more M&Ms (see picture in post as to what this should look like), and bake for 12-15 minutes. They’re ready when the edges are lightly golden and the center is pale, puffed, and slightly underdone.
Sprinkle the cookies with more M&M's when they are fresh out of the oven.
Transfer the cookies to a cooling rack. Enjoy!