Prepare carrots by peeling and grating. Set the grated carrots aside.
In a mixing bowl, cream the sugar, eggs, water and vegetable oil together.
Add the flour, vanilla, baking powder, baking soda, and cinnamon.
Blend just long enough to blend all ingredients.
Stir the grated carrots in by hand until they are evenly distributed.
Grease the inside of the crock of a 3 quart slow cooker.
Pour in the batter and spread out evenly on the bottom of the crock.
Place four or five paper towels (or tea towel) over the top of the crock and cover.
Cook on low for 2-3 hours.
Take out of crock and allow to cool.
Add whip cream or frosting just prior to serving.