Separate the flour, sugars, baking soda and salt from the M&Ms and chocolate chips.
Soften butter in microwave for 30-40 seconds.
Put flour, sugars, baking soda and salt into mixing bowl. Add butter and mix on low setting.
Add beaten egg. Mix
Add vanilla. Mix
Add M&Ms and chocolate chips and mix thoroughly.
Roll dough up into a ball and add to greased cookie sheet, makes 12 cookies.
Bake for 11-13 minutes at 350 degrees.