I love my crock pots, especially when I'm short on time. I use them to make a big batch of porridge just about every week (see the mixed grain porridge recipe, but feel free to experiment with other grains). Also, in addition to these recipes, I sometimes cook dried beans in my crock pots (it takes several hours, depending on the type of bean, on the high setting). I recommend a medium sized crock pot (3-4 quarts) and a large one (5-6 quarts) so that you can make recipes of different sizes.
Breakfast
Crock pot millet and amaranth porridge
Crock pot mixed grain porridge
Crock pot oatmeal (with oat groats): sweet and savory
Main dishes
Crock pot chicken and hominy stew
Crock pot chili with venison sausage
Crock pot curried red lentil, chickpea, and quinoa stew
Crock pot split pea, lentil, and sausage soup
Crock pot squash enchilada casserole
Side dishes
Crock pot applesauce
Crock pot napa cabbage with apples
Crock pot roasted summer vegetables
Slow cooked cabbage with apples and cinnamon