Preheat your oven to 350 degrees and line 2 baking sheets with parchment paper
In a large bowl, whisk 8 tablespoons of softened butter with 3/4 cup of brown sugar, a large egg and a teaspoon of pure vanilla extract until combined
Add 1 1/2 cups of all purpose flour, 1 1/2 cups of old fashioned oats, 1 teaspoon of ground cinnamon, 1/2 teaspoon of apple pie spice, 1/2 teaspoon of salt and 1/2 teaspoon of baking soda and mix until mostly combined
Add 3/4 cup of diced apples and 1/2 cup of roughly chopped heat candy bar and mix until evenly distributed
Place evenly sized portions of cookie dough onto parchment lined baking sheets leaving 2 inches in between each
Bake in a 350 degree oven for about 10 minutes or until the edges are golden brown and the middles are lightly set
Let the cookies cool until firm on cooling racks
Store leftovers in an airtight container at room temperature for up to 4 days