This recipe uses a microwave and just two ingredients (milk and sugar) to make rich, homemade condensed milk, which is then used to make cold milk ice cream. The condensed milk is heated and stirred repeatedly in the microwave until it thickens, then the remaining milk is added and mixed. The mixture is then poured into silicone molds or ice cube trays and frozen overnight until firm. Because it's easy to make without using a stove, it's perfect for beginners and makes a milky dessert that's ideal for hot days.