I would TRY to cut the beef into very thin strips and grill for a very short time - or reverse that, I guess. ( grill, then cut). I'd never have chuck on hand tho as I think it's tough - but anyway, I'd cut the rest into bite size pieces, whip up a Thai type dressing, and toss the whole mess with a bed of mixed greens. If you want some starch, make up some quick garlic bread sticks. I just cut slices of hearty bread into strips, paint on melted butter, sprinkle with garlic powder and toast it or top brown in my ancient toaster oven. It's Lazy Man's Garlic Toast.