Make Ahead
•Assemble the filling: Prepare the sweet potato filling completely, spread it into your greased baking dish, and let it cool to room temperature. Cover tightly and refrigerate for up to 3 days.
•Make the topping separately: Combine the Topping ingredients except for the pecans. Store it in an airtight container or zip-top bag in the refrigerator. Stir in the pecans just before baking to keep them crunchy.
•When ready to bake: Remove both the filling and topping from the refrigerator and let them sit at room temperature for about 30 minutes. Add the Topping and bake at 350°F for about 30-40 minutes, or until hot and bubbly with a golden topping.