Start by lining an 8x8 square baking dish with parchment paper or tin foil, you will need 2 pieces. Overlap the pieces so that the sides drape over one another.
In a microwave safe bowl, add chocolate chips and sweetened condensed milk. Microwave on HIGH for 2 minutes, make sure to stir every 30 seconds. If chocolate chips still not melted, continue to microwave and stir in 30 second intervals until completely smooth.
Pour chocolate mixture into the prepared baking dish and chill in the fridge for 2 hours. Once completely set, lift the overhanging parchment paper to remove the fudge from the pan and cut into squares.
Notes
Warm Knife: Using a warm knife will help you easily slice into the fudge when cutting. Simply fill a glass up with hot water and allow your knife to sit in the hot water for 30 seconds to a minutes, remove wipe off the water and slice the fudge.
Even Fudge Slices: To get the perfect even squares, start by cutting in half vertically, then those halves in half, repeat on horizontally and you will have 16 perfect 2x2 inch fudge squares.
Grease Edges Well: Ensure you grease the edges of pan down well so the chocolate fudge will slide right out of the pan.
High Altitude Directions: If you live at a higher altitude, for the best fudge results, you should lower the temperature when cooking. To be more precise, reduce the temperature 2 degrees for every 1,000 feet above sea level.