Fill a large bowl with 3 cups of tolerated dry food, moisten it with one-half cup of water and let it sit for about 10 minutes to absorb the liquid. (Add more water if necessary.)

Place in a food processor and process until smooth.

Roll into small balls and place on a cookie sheet.
Press down with a fork (like making peanut butter cookies).

Bake at 400 degrees for 15 minutes.
Turn off the oven and allow cookies to cool in the oven.

They must be completely dried out to keep well.