Sweet Potato Cake with Maple-Bourbon Pecans

Name: Sweet Potato Cake with Maple-Bourbon Pecans
Prep time: 25 min
Cook time: 1 h 5 min
Total time: 1 h 30 min
Cuisine: American, Southern
Ingredients: 0.25 cup unsalted butter, softened; 0.25 cup light brown sugar; 0.25 cup pure maple syrup; 1 tablespoon bourbon; 0.5 teaspoon kosher salt; 2 cups chopped pecans; 1 teaspoon butter, or as needed; 3.25 cups all-purpose flour, plus more for dusting; 2 teaspoons ground cinnamon; 1.5 teaspoons baking soda; 0.5 cup unsalted butter, softened; 1 cup white sugar; 1 cup light brown sugar; 4 large eggs, at room temperature; 2 cups mashed sweet potatoes; 0.5 cup buttermilk; 0.5 cup sour cream; 0.5 cup pure maple syrup; 0.25 cup unsalted butter, melted; 0.25 cup bourbon; 1 (7 ounce) can whipped cream, or as needed