Use a fork to poke holes in sweet potatoes. Then wrap them each in a damp paper towel and microwave until fork tender (about 5-7 minutes). Set aside.
In a medium saucepan combine lentils, broth, chipotle, 1 tablespoon of adobe sauce, lime juice, salt, cumin & coriander. Bring to a boil then reduce to a simmer until cooked but not mushy (about 25 minutes). Once cooked, add 1 more tablespoon of adobe sauce if you want more spice. Season a bit more to taste.
Cut the sweet potatoes in half lengthwise and top with lentils and guacamole.