Can I use a larger crockpot than the recipe calls for? I have a recipe that calls for use of a 4 qt crockpot. However, I only have a 6 qt. Is it okay to use the 6 qt instead? The recipe is for a pudding cake.
If you keep the lid on, it shouldn't make much difference in practice. 

The thing to watch is that the larger surface area and heat supply of the 6 qt pot might make the recipe cook a little quicker than it would in a 4 qt pot, and also make it dry out quicker than it should (which is why you need the lid on). Just take a look after about two thirds of the time and decide if you should add a little water, or not.