Sweet Potato Brownies with Cinnamon Glaze

Prepare the Brownies: Preheat oven to 350°F (175°C) and line an 8×8-inch baking pan with parchment paper.
In a bowl, whisk together mashed sweet potatoes, melted butter, and brown sugar until smooth. Add eggs and vanilla, mixing well.
In a separate bowl, combine flour, baking powder, salt, cinnamon, and nutmeg. Gradually fold into the wet mixture. Stir in pecans.
Bake: