Preheat your oven to 350℉
Butter the bottom and sides of the pan. Line the pan with 2 pieces of parchment paper. One piece covering the bottom and sides with a portion hanging over the edges and another piece covering the bottom and ends with a portion hanging over the edges. Set aside.
In a large bowl, whisk together the melted butter, oil, granulated sugar, brown sugar and eggs until smooth.
Next add the cinnamon and nutmeg and whisk until incorporated.
Add the milk and mashed roasted sweet potato and whisk until all ingredients are combined and the mixture is smooth.
In a separate bowl whisk together the flour, baking soda, kosher salt and baking powder. Then sift the flour mixture into the wet ingredients.
You cacontinue mixing with the whisk or switch to a large spatula.
Place the batter into the prepared pan and smooth the top.
Sprinkle with the pecans and then a tablespoon of granulated sugar.
Bake for 50-55 minutes. If using a standard loaf pan it may take less time to bake. You will know the loaf is done when you press lightly on top and it springs back or a cake tester inserted into the cake comes out clean. Do not over bake!
