Homemade chewy dog treats

I make these from time to time for our dogs and they love them!!  Super easy and they make quite a few.  

You will need:

2 1/2 cups whole wheat flour (dogs shouldn't really have white flour)
3/4 nonfat dry milk powder
1 egg
1/2 cup oil
2 beef bouillon cubes dissolved in
3/4 cup boiling water
3 tbsp. brown sugar

preheat oven to 300 degrees.
combine all the ingredients and knead until mixed well
roll out on floured surface until 1/4 inch thick
use cookie cutters or just cut into squares with a knife
put on greased cookie sheets and bake for 30 minutes

I used little heart, fire hydrant and gingerbread man cookie cutters.  I also made two larger bones as a treat.