Preheat oven to 400° F. Line a large sheet pan with parchment paper. Place the sliced sweet potatoes in a single layer on one side of the pan. On the other side of the pan, arrange the butternut squash cubes in a single layer.
Brush the top side of the sweet potatoes with the melted ghee. Pour the other tablespoon of cooking fat over the squash and mix to coat. Season both the potatoes and the squash with sea salt to taste. Bake at 400° F for 15-20 minutes until everything has softened when pierced with a fork and sweet potatoes start to brown and crisp around the edges.
Mash/shred the squash. Top the sweet potatoes with the butternut squash. Drizzle with honey. Add the chopped nuts and garnish with cinnamon. Serve hot with a fork and knife and enjoy!