1cupCold Butter(cut into cubes and microwave on high for 8 seconds)
1cupBrown Sugar
1/2cup + 2 TablespoonsSugar
2largeEggs
2teaspoonsVanilla
2 3/4cups Flour
3/4teaspoonBaking Soda
1teaspoon Cornstarch
1/2teaspoonSalt
2cupsPlain M & M's(plus more for placing on top of cookie dough balls)
Instructions
Preheat oven to 400 degrees. In a large mixing bowl, cream butter, brown sugar, and sugar for 4 minutes until light and fluffy.
Add eggs and vanilla. Mix for 1 minute longer.
Stir in flour, cornstarch, baking soda, and salt. Mix just until combined. Fold in M & M's.
Scoop cookie dough onto baking sheets. I suggest using parchment paper or Silpat silicone baking sheets on light-colored baking sheets. Place extra M & M's on top of cookie dough balls so the M & M's show up after baking.
Bake for 9-11 minutes or until the edges just begin to turn a light golden color. Remove from oven and let set for 5 minutes before removing from the cookie sheet.