Eating Crystallized Honey

I keep my jar of honey on the cook stove and the warmth from the stove keeps it from crystallizing.

You can set it in a pan of hot water and it will melt. You will also have to keep changing the water. Depending on the container, you could even but it in a pan of water and bring the water to a boil.

Yes you can eat it its great on toast!
If you want to un-crystalize it its easy. If in a glass jar just boil a small pot of water. Once to a boil take off heat and place jar without lid in the water stir every so often. If it's in a plastic jar just transfer to a glass jar. Honey if if raw or pure will never go bad and doesn't need to be kept in the fridge. Some of the store bought stuff that has expiration dates and says keep refrigerated means that either they feed their bees corn syrup or added it during the processing and isn't totally "pure".