- 1½ quarts pure vegetable oil
- 1 cup granulated sugar
- 2 tablespoons ground cinnamon
- 1 cup all-purpose flour
- 2/3 cup cake flour
- ½ teaspoon baking soda
- 1 teaspoon baking powder
- ½ teaspoon salt
- ½ teaspoon ground nutmeg
- 1 tablespoon ground cinnamon
- ¾ teaspoon ground cardamom
- 1 large egg
- 1/2 cup granulated sugar
- 1 tablespoon unsalted butter, melted
- ½ teaspoon pure vanilla extract
- ½ cup apple cider, at room temperature
- ¾ cup finely chopped peeled apple (we used Granny Smith but any type of apple will do)
- Pour vegetable oil into a large (4-5 quart) saucepan. Attach a candy thermometer to the side of the pan. Heat over medium heat until the oil reaches 350 to 360 degrees F – being careful not to over heat.
- While the oil heats, pour granulated sugar and cinnamon into a plastic zipper seal bag. Shake to combine. Set bag aside.
- Line a baking sheet with 2-3 layers of paper towels. Set aside on counter near saucepan with hot oil. Place a cooling rack on top of another baking sheet. Set aside.
- In a medium bowl, sift together both flours, baking soda, baking powder, salt, nutmeg, cinnamon, and cardamom. If necessary, use a whisk to evenly mix.
- In a large bowl, whisk egg and sugar together until blended. Add melted butter, vanilla and apple cider and whisk again to combine. Stir in the chopped apples with a rubber spatula.
- Place the sifter over the bowl with the wet mixture, then resift the dry ingredients into the wet ingredients. Use the rubber spatula and stir gently, just to combine and being careful not to overmix.
- Using a small cookie dough scoop (1½ inch diameter) drop 5 level scoops of batter, one at a time, into the preheated oil. Use a spider strainer (or heat-proof, long handled slotted spoon) to gently spin the doughnut holes around in the oil so they evenly cook – and keep a close eye on the temperature of the cooking oil to ensure that it stays around the 350-360 degree F range. Cook the doughnut holes until they are a deep golden brown (but not too brown) about 3-5 minutes. Using the spider strainer, carefully remove each doughnut hole to the pan lined with the paper towels to drain.
- Repeat with remaining batter. After the doughnut holes have cooled for 1-2 minutes, place 2 or 3 doughtnut holes in the bag with the cinnamon sugar and shake to coat. Place each coated doughnut hole on the cooling rack to finish cooling completely.
- Serve immediately.