1/2 cup all purpose gluten free flour blend ( (please click through for details; I used Better Batter)) 
1/4 teaspoon xanthan gum (omit if your blend already contains it) 
3 tablespoons packed light brown sugar 
1/2 teaspoon ground cinnamon 
1/8 teaspoon kosher salt 
2 1/2 tablespoons unsalted butter (melted and cooled) 
2 cups all purpose gluten free flour blend ( (please click through for details; I used Better Batter)) 
1 teaspoon xanthan gum (omit if your blend already contains it) 
1/4 cup cornstarch 
3/4 teaspoon kosher salt 
1 teaspoon baking powder 
1/2 teaspoon baking soda 
2 teaspoons apple pie spice ((See Recipe Notes)) 
3/4 cup granulated sugar 
6 tablespoons unsalted butter (at room temperature) 
2 eggs (at room temperature, beaten) 
2/3 cup buttermilk (at room temperature (See Recipe Notes)) 
5 ounces apple butter (homemade (follow link for recipe) or store bought, at room temperature)