To avoid the packaging of instant oatmeal, Lynn Lloyd experimented until she came up with her own mix, a blend of dried fruit, grains, nuts, and mellow spices. She buys 4- or 7-grain hot-cereal flakes in a health food store. You can also use a coarsely ground hot cereal. The uncooked mixture (complete step 1) will keep, stored airtight, up to a month. PREP AND COOK TIME: About 15 minutes.