If you want a bit more of an apple-spiced flavor in your bars, then 1 to 2 teaspoons of apple spice blend is a perfect choice. I like to keep a jar on hand for recipes like this, but if you do not have it, you can add individual ingredients instead. An apple pie spice blend is a combination of ground cinnamon, ground nutmeg, and ground allspice. A simple recipe is 1 teaspoon cinnamon, 1/4 teaspoon nutmeg, and 1/4 teaspoon allspice.