spent grain dog biscuits

As homebrewers, we like to experiment with ways to make use of spent grain. This time, I made dog biscuits with some of it. As you can see, Francois likes them:

This recipe is ubiquitous online, but the original source appears to be homebrewtalk. I used egg replacer instead of egg since it is cheaper and we don't have hens.

Ingredients:
4 c. spent grain
2 c. flour
1 c. peanut butter
1 egg or egg replacer

Mix all ingredients in mixer or bowl. Roll out on a cookie sheet and score into small squares with pizza cutter and bake at 350ºF for 30 minutes or so. Then turn off the oven but leave the biscuits in it and let it coast until they're done.