You can use any sort of sugar , water or fats you want. It merely tastes a bit different. It is just that when boiling brown sugar don't boil in microwave. It will be easier to clean. read more
Stir mixture vigorously with wooden spoon until chocolate melts and fudge thickens slightly, about 1 minute. Transfer mixture to prepared baking pan; smooth top of fudge with rubber spatula. Sprinkle fudge with chocolate chips. Refrigerate fudge until firm enough to cut, about 2 hours. Using foil as aid, lift fudge from pan. Fold down foil sides. read more