How to make a soft and delicious pumpkin cake bar? This question can be best answered if you follow this healthy 3-ingredient pumpkin cake bars recipe. You have to spend only five minutes to make this dish and there are only three ingredients required as well. As the name suggests, it is a healthy dish with very low fat contents. This cake bar is highly rich in fiber and it can also be described as a gluten free and vegan dish. The sugar contents are also very low and you can use it as a perfect snack for any time you prefer.