Preheat your oven to 350°F (175°C). Grease and flour a 9x5-inch loaf pan.
In a mixing bowl, whisk together the flour, baking powder, baking soda, salt, cinnamon, and nutmeg. Set aside.
In a large bowl, beat the softened butter and granulated sugar together until light and fluffy, about 3-4 minutes.
Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract.
Mix in the sour cream and apple cider until combined.
Gradually incorporate the dry ingredients into the wet ingredients, mixing just until combined. Do not overmix.
Pour the batter into the prepared loaf pan and smooth the top with a spatula.
Bake in the preheated oven for 50-60 minutes or until a toothpick inserted into the center comes out clean.
Let the cake cool in the pan for about 10 minutes, then transfer it to a wire rack to cool completely.
In a small bowl, combine the powdered sugar, apple cider, and cinnamon. Whisk until smooth. Adjust the consistency if necessary by adding more cider or powdered sugar until you get a pourable glaze.
Drizzle the glaze over the cooled pound cake, allowing it to drip down the sides.
Notes
Slice the pound cake and serve it on a decorative plate. Add thinly sliced apple garnishes next to the cake for added color and a seasonal touch.