Start by preheating your oven to 350 degrees Fahrenheit. Then either grease your pan, or line it with parchment paper or a baking mat.

Put both sugars and butter into a large bowl and beat until light and fluffy.

Add in egg and vanilla and stir well.

Combine dry ingredients (flour, baking soda, and salt) until fully mixed together. Do not over mix.

Fold the chocolate chips and M&M candy into the dough until evenly dispersed.

Use a standard-sized cookie scoop to scoop dough onto your cookie sheet in even rows. Alternately, you can roll into balls, using about 2 tbsp of cookie dough per ball.

Bake the cookies about 8-10 minutes, until the edges are golden. Avoid overbaking them - they just don't taste as good that way!