In a large bowl, whisk together the melted butter and brown sugar until blended.
Add the egg and vanilla and whisk to combine.
Add the flour and baking soda and fold into the batter, just until combined. When the flour has almost all been incorporated, add the chopped andes mints and continue folding until no large lumps of flour remain.
Transfer the dough to the fridge to chill for 30 minutes.
While the dough chills, preheat your oven to 350 degrees F and line two large sheet pans with parchment paper.
Scoop 2 tablespoon sized balls on the baking sheets, making sure to place them at least 3” apart, these cookies spread!
Bake for 14 minutes, or until the edges are set and golden brown. Allow the cookies to cool fully to room temperature on the tray. They will set as they cool!
Store any leftover cookies in an airtight container at room temperature for up to five days.
Notes
Make sure to space each ball of cookie dough at least 3 inches apart. These cookies spread!
Sprinkle a pinch of flaked sea salt on the top of each cookie immediately after baking. It will remind you of these amazing Caramel Cookies.
Let the cookies cool on the baking tray. They will continue to set as they cool to room temperature.
Store cookies in an airtight container at room temperature. Enjoy within 5 days