Sweet Potato Pound Cake

Name: Sweet Potato Pound Cake
Prep time: 10 min
Cook time: 2 h 30 min
Total time: 2 h 40 min
Cuisine: American
Ingredients: 3 c all-purpose flour- sifted; 1 c unsalted butter- room temperature (2 sticks); 1 c buttermilk- room temperature; 1½ c sweet potato - cooked; 1 c light brown sugar; 2 c granulated sugar; 1 tsp baking powder; 1/2 tsp salt; 1/2 tsp cinnamon; 1/4 tsp nutmeg; 5 large eggs- room temperature; 2 tsps vanilla extract; 8 oz cream cheese - room temperature; 3 c powdered sugar; 1/2 c unsalted butter (1 stick) - room temperature; 1/2 c (whole) milk - room temperature; 1/8 tsp salt; 2 tsps vanilla; chopped pecans (optional)