Here is a recipe for piggy cookies I got off of www.theguineapigrescue.com

I haven't yet made any myself but going to very soon.

Piggy Cookies

For special occasions and holidays bake your piggies a treat with the following recipe.

1 small carrot, pureed
1/2 banana, mashed well
1 tbsp honey
1/4 cup Guinea Pig pellets, ground finely in a coffee grinder
1/4 cup ground oats, ground finely in a coffee grinder

Mix pureed carrot, banana and honey in a medium bowl. Add pellet powder and ground oats. Mix until blended. Knead in your hands for 1-2 minutes. Roll out the "dough" in 1/8- to 1/4-inch thick layers between sheets of plastic wrap. Cut into small cookies (about 3/4 inch across). Place cut shapes onto a parchment paper covered cookie sheet. Bake at 325 degrees for about 30 minutes (check to make sure they are not browning too much). Turn off the heat and let the cookies sit in the warm oven for an hour or so.

Remember this is a treat, do not give every day.

original recipe from House Rabbit Society