Rolled oats can be substituted for the barley and whole wheat flakes, which, along with flax seed, are available in bulk and health food stores.
Double this recipe to bake in 9x13 pan for 30-35 minutes. From The Best GF Family Cookbook
This is a great snack to throw in the lunchbox. It is also good sprinkled over yogurt in the morning or for the afternoon hunger pangs.
Granola bars make a great snack at any time. You can wrap and freeze them separately for up to one month to pop into lunches in the morning.