Step 1

Preheat oven 350 degrees. Line a cookie sheet with parchment paper.

Step 2

In a large mixing bowl, add butter, brown sugar and granulated sugar. Mix until light and fluffy.

Step 3

Add in the egg and vanilla extract. Mix until incorporated. Scrape down the sides of the bowl.

Step 4

Add in the flour, baking soda, and salt. Mix until the cookie dough comes together into a ball.

Step 5

Stir in the butterscotch chips and m&m's until thoroughly mixed in.

Step 6

Scoop the cookie dough and place on the prepared cookie sheet. I normally place 3 rows of 3.

Step 7

Bake for 15 minutes or until the edges are golden.

Step 8

Remove from the oven and let cool for 10 minutes. Place on a cooling rack to finish cooling.