trupeach- you probably would just use spray crisco or pam :):):)
Terry- we usually go 7 minutes in our microwave for a baked potato or an ear of corn. It depends on your microwave. I'd start at less minutes as some microwaves are quite wazoo and cook much faster. And we usually do a couple at a time. The sweet potatoes were cooked one at a time and cooked about the same time as the regular potatoes. The flavor of fresh corn done in these bags is absolutely incredible.