I sprout beans (as well as grains and seeds) first to increase the nutrients, reduce the anti-nutrients, and they cook faster because they were sprouted first. It only makes sense to increase the nutrients in my books, as well as reducing the impact from high-glycemic carbohydrates. Sprouted lentils only require a small amount of cooking - stir-fry or steaming, and when you dehydrate sprouted lentils, they cook in just a few minutes. We also use sprouted and dried lentils for snacking.
More information:
http://www.vegetariantimes.com/blog/...ins-and-beans/
You can also "cook" beans in a Thermos bottle, so all you need is boiling hot water.
http://www.thermoscooking.com/
I also make them in my Thermal Cooker (a much larger Thermos) or Wonder Oven - if you are looking for passive heat methods.
More information:
http://frugalandthriving.com.au/2014...essure-cooker/