Preheat oven to 400 and remove phyllo dough from freezer to thaw.
Peel and thinly slice sweet potatoes. Melt butter and pour half over the sweet potatoes along with the brown sugar and chopped sage.
Thinly slice the leek and shallot and add to a skillet with the butter. Season with salt and pepper. Cook for about 15-20 min stirring often. Leeks and shallots should be fully softened and combined. Remove from heat and let cool.
Add leek/shallot mixture to a bowl with the other filling ingredients. Mix until fully combined.
Melt remaining butter and brush one sheet of phyllo dough. Add another sheet on top and repeat with remaining 5 layers, brushing with butter between each layer.
Add filling to the middle and then layer the sweet potatoes in a circular pattern. Crinkle the phyllo dough in on each side to create the crust. If the dough is flaking, add a little melted butter to those edges. Brush the top with more butter. Bake for about 25 min or until nicely golden brown. Drizzle the top with honey and serve. Enjoy!