Preheat oven to 350 degrees
Brush the donut pan with melted butter or non-stick cooking canola cooking spray.
In a large mixing bowl, add 2 1/4 cups of Krusteaz Buttermilk Pancake mix, 1/2 teaspoon ground cardamom, 1/2 teaspoon ground cinnamon, 1/2 cup packed light brown sugar, 1/2 cup granulated white sugar, and 1 teaspoon kosher or sea salt. Mix well with a wire whisk or a fork, but do not overmix.
In a separate bowl, add a single egg. Next, add 1/2 cup plus 1 tablespoon of spiced apple cider, 1/2 cup plus 1 tablespoon of buttermilk, and 1 tablespoon of pure vanilla extract. Mix well until the ingredients are fully incorporated.
Slowly mix the wet mixture into the dry mixture.
Spoon the batter into a large zip-lock plastic bag with a corner cut off or a piping bag.
Fill each donut circle of the donut pan halfway with the batter.
Add the pan-fried apples to the donut batter right before placing the donuts in the oven.
Place on the center rack of the 350-degree oven and bake for 10-12 minutes.
Check for doneness by inserting a toothpick into a donut; it should come out clean.
Remove the pan from the oven and allow the donuts to cool for about 5 minutes.
While the donuts are still slightly warm, brush each donut with melted butter and press the top into the cardamom cinnamon sugar mixture.
Serve.