Line a 8x8 casserole dish with parchment paper, leaving a couple inches overhang on the ends for easy removal.

Cook sweetened condensed milk & chocolate chips in a small saucepan over medium heat until melted, stirring frequently.

Remove from the heat, pour in the prepared pan & sprinkle with M&M candies. Press down slightly with the palm of your hand to set the m&ms in the chocolate Cool completely before slicing - you can refrigerate to help speed up the process.