This is exactly the same recipe my family has been using since 1958! Even the name is the same, though certainly it has been colloqusalised to "Chex Mix". Over time we have modified it slightly to include less wheat chex because it soaks up too much butter. So 2.5 cups, 2.5 cups, 1 cup of Rice, Corn, and Wheat respectively. You can also make it in the microwave with similar results for 2 min, stirring every 30 seconds. Enjoy!