Preheat oven to 350°
Add flour, cinnamon, nutmeg and ginger to a bowl and whisk together. Set aside.
Add softened butter to a mixer bowl with brown sugar and granulated sugar. Mix for 2 minutes at medium-high speed.
Add eggs, one at a time, mixing until each egg is combined.
Next, add the sour cream and vanilla, mixing until incorporated.
Add 1/3 of flour mixture to the batter, mixing at low speed until combined, slowly add the remaining flour, mixing until well combined.Butter and flour 2 loaf pans (9 x 5 inch) or 1 bundt pan (12 cup).
Fill each loaf pan 3/4 full with batter or fill the bundt pan. Place the cake pans into a preheated oven.
While the cake bakes, prepare the icing. In a medium-size bowl, combine powdered sugar, apple cider and cinnamon until smooth. Cover and set aside.
Bake pound cake for 1 hour 15 minutes for the loaf pans or 1 hour 30 minutes in a bundt pan. A toothpick inserted in the center should come out clean.
Place cake pans on a wire rack to cool 5 minutes. Use a sharp knife to loosen the cake edges, invert onto the wire rack and flip it over to cool completely.
Spread icing over the cooled cake and sprinkle with sliced almonds.