"Create a creative but still manageable vegan dinner recipe for a household of 4 using leftover hearty vegetarian chili with bulgur and beans and sweet potatoes. The concept should be: bake sweet potatoes, scoop out the insides, mix the flesh with a few simple ingredients, stuff the shells with chili, then top with the sweet potato mixture and bake again. Use imperial units. Keep it whole-food focused, satisfying, and not overly complex. Include a clear title and practical steps."