3 medium sweet potatoes
1 tbsp. unsalted butter
2 tbsp. dark-brown sugar
1/2 cup fresh lemon juice
1/8 tsp. ground cinnamon
1/8 tsp. kosher salt

Preheat oven to 325F.  Peel sweet potatoes and cut into 1 inch thick slices.  Butter a 13x9 baking dish and arrange sweet potatoes in a single layer. Mix brown sugar, lemon juice, cinnamon and salt in a small bowl. Pour evenly over potatoes, cover with aluminum foil, and bake until potatoes are fork-tender, about 45 minutes. Remove foil, return potatoes to oven, and bake until glaze becomes syrupy, about 5 minutes more. Serve immediately.