Preheat oven to 350 deg. and Line a cookie sheet with foil
Put the carrots, egg, and boullion in a food processor & mix together. Add the flour & mix together. It should be almost as stiff as a loaf of bread. Sorta like egg noodles.
Turn out onto a floured cloth and roll out as thin as you can. Mine were about the thickness of a 1/2 dollar. Use a pizza cutter to cut it into 1/2 inch cubes. (Do all of the slices in one direction, turn the cloth and do all of the cross slices.)
Use a pancake turner to lift several onto the cookie sheet at a time. It doesn't matter if they touch. You can easily break them apart after baking. (I actually sliced mine up on the cookie sheet - once - it left slice marks through the foil! Aaurgh!)
Lightly spray the tops of them and sprinkle with a little parmesan cheese (I just use the prepared stuff that I can buy with a sprinkle top can. I think if you try to use fresh, it'll melt and make a mess. Remember, we're just looking for a quick flavor bite!)
Bake for about 1/2 hour until lightly browned. You're trying to dry them out enough so you can leave them out on the counter, but you usually can still leave a fingernail print in them. If you bake them too long, they burn.
I use these for training treats. They break easily and the pup can chew them quickly and be ready for more training!