These are really yummy!
I used black beans instead of lentils, at a friend's recommendation. I'm going to try them with red lentils this week.
I especially like this recipe because you can make all or part of it ahead of time. I'm cooking the sweet potatoes and lentils this morning since I'm home and have the time. Tomorrow I'll assemble the burritos to bring to my parent's house for dinner Wednesday. The can also be assembled and then frozen, ready to cook. About 45 minutes if you cook them frozen.
Sweet Potato Walnut Burritos