1 can sweetened condensed milk such as Eagle Brand or any store brand (not evaporated)
12 oz semi-sweet chocolate chips
In a medium saucepan, heat condensed milk and chocolate chips over very low heat stirring constantly until chips melt and mixture is very smooth. (I like to use a heat proof spatula.) Pour into a buttered pan or onto a paper plate with sides and cool. Will set up firm like fudge when chilled either in the refrigerator
or on top of ice in the ice chest, if you can wait that long. Can add 1 tsp. vanilla if you have some, and chopped nuts, but that makes it more than two ingredients and it is just fine without the additions.