Preheat your oven to 350°

In a large bowl, whisk butter, brown sugar and white sugar together until combined.

Whisk egg and vanilla into butter/sugar mixture.

Next, add in flour, baking soda and salt. Combine with a wooden spoon until a soft batter forms.

Finally, add in the M&Ms and chocolate chips and stir until evenly blended.

Line a baking sheet with parchment paper, or use a silicone baking mat.

For each cookie, use about 3 TBSP of dough rolled into a ball.

Arrange dough balls on baking sheet.

Place in oven and cook for 10 minutes.

When cookies come out, they will not look “done”. The cookies will continue to set up as they cool.

Allow cookies to cool on baking sheet for 5 minutes.