Nonstick cooking spray for baking   1 ⅔ cup all-purpose flour   1 ½ teaspoon baking powder   ½ teaspoon salt   ¼ teaspoon ground cinnamon   ¼ cup whipping cream   ½ cup (1 stick) unsalted butter, softened   ½ cup granulated sugar   ½ cup packed brown sugar   3  eggs   1 ½ teaspoon vanilla bean paste or vanilla   ⅔ cup buttermilk or sour milk  

Cream Cheese Frosting:

1 8 ounce package cream cheese, softened ¼ cup (1/2 stick) unsalted butter, softened 2 cup powdered sugar ¼ teaspoon ground cinnamon pinch salt

Assembly:

1 - 1 ½ cup sliced almonds, lightly toasted if desired Silver edible luster dust or powdered sugar (optional)