3/4 cup coarse ground wheat flour (I don't have a grinder, so I just used regular wheat flour)
1/2 cup wheat bran
1 tsp. salt
Mix together, and pour onto 2 baking sheets with silicone baking mats, or the like. Tap the pan to spread it as thin as possible (I used a spoon to help get it thin enough) and bake at 375 degrees for 20 minutes or until brown and crispy. It will get crispier as you take it out of the oven and it sits for awhile. Break it up into little pieces and add 1/4 cup of raisins.
I got this recipe from an old High School friend, and my almost 3 year old was a gigantic fan! She helped me break the flakes apart and put one in her mouth for every one that went in the bowl.