First, preheat the oven to 350 ° F.
Then, put 24 paper liners into two cupcake pans.
In a large bowl, mix the pound cake mix, and apple pie spice.
Add and mix in milk and eggs, until well mixed.
Stir in diced apple and chopped walnuts.
Spoon batter into paper cake cups, to 2/3 full.
Place in the oven and bake for 20 to 25 minutes, until done.
Use a toothpick to test for doneness.
Allow cupcakes to cool on a wire rack.
While the cupcakes are baking, mix the confectioner’s sugar and lemon juice.
Spread frosting onto cupcakes.
Lastly, top frosting with a walnut half.