Put ingredients except animal crackers and marshamallows into a 4 or 5-quart crockpot.
Cover and cook on low 3 hours. DO NOT remove lid!
Turn off and allow to cool slightly. Mixture will not be melted but will be soft.
Mix thoroughly and add marshmallows and animal crackers.
Drop by teaspoon onto wax paper.
Let cool thoroughly.
Makes approximately 150 - 170 pieces.
**NOTE: There seems to be discrepencies in the terms crockpot and slow cooker. This recipe is for a crockpot which, when on low, will only melt the ingredients. A slow cooker will get hotter and start to cook the ingredients, thus resulting in an inferior product. Please be aware of what kind of appliance you have. It seems the older "crockpot" works best. There have been some who have burned their ingredients because their appliance is too hot. The makers and manufacturers of these appliances seem to interchange the description of their appliances calling slow cookers crockpots. It seems that Rival owns the name crockpot, therefore, others can't use the name crockpot, they are slow cookers. It's very confusing, but slow cookers, indeed, cook hotter, which could result in burning of this recipe. There are many discussions and explanations of this subject within the comments.
Credit to Donna Brown for the inspiration and note about the crock pots.