I think the only real 'rule' to using a crockpot is that the liquid needs to be up to the half way point, so the pot doesn't over-heat. If your recipe is big enough to fill it that far, it should be okay, if not, you may need to add a few more ingredients, or double the recipe. That's all! Have fun with it!
*~ Kori ~*
Going on a cruise in March!