This is a super-easy vegetarian crock pot recipe-just put all the ingredients for this easy lentil and vegetable soup in your slow cooker in the morning and forget about it until the end of the day. Lentil soup is hearty enough for a main dish, but you could always add extra vegetables to make it even more filling. Lentils are inexpensive, quicker to cook than dried beans, and full of healthy fiber and protein, which makes them great for anyone on a budget, vegetarians, vegans, and anyone looking for a filling, low-calorie meal. All of the ingredients in this recipe are vegetarian and vegan, and, if you need this crockpot recipe to be gluten-free as well, just use a gluten-free or homemade vegetable broth so you know what's in it. This lentil soup is compatible with the slow carb diet.