Preheat Oven to 350℉ (180℃) and line a 12-cavity cupcake pan with paper liners.
Whisk together the flour, baking powder, baking soda, salt, and spices in a medium bowl. Set aside.
189 grams all purpose flour, 1 teaspoon baking powder, ½ teaspoon baking soda, ½ teaspoon fine sea salt, 1.5 teaspoons ground cinnamon, ½ teaspoon ground ginger, ½ teaspoon ground nutmeg
In a large bowl using a handheld mixer, cream the room-temperature butter and brown sugar until combined. Add the oil and mix again until fluffy. About 1-2 minutes.
220 grams dark brown sugar, 57 grams unsalted butter, 60 grams sunflower oil
Continue on medium-low speed and beat in one egg at a time until fluffy, about 30 seconds each.
100 grams eggs
Mix in the crème fraîche and vanilla.Scrape the bottom and sides of bowl as needed with a spatula to make sure everything is incorporated.
80 grams crème fraîche, 60 grams whole milk
Mix in half the dry ingredients, alternating with the milk. Followed by the remaining dry ingredients until just combined.
Fill each paper liner ⅔ -¾ full with batter. I like to use a large cookie scoop to evenly distribute the batter amongst the paper liners.
Place pan on the middle oven rack and bake for 16-18 minutes or until a toothpick inserted into the center comes out clean and the tops are springy to the touch.
Place tray on a cooling rack for 5 minutes, before flipping them out and setting the cupcakes directly on the rack to cool completely.
Make Apple Pie Filling While Cupcakes are Baking
In a saucepan on medium heat, add apples, butter, spices, sugar and lemon juice. Stir slowly until butter is melted, sugar dissolves, and apples begin to soften. (4-5 min)
3 large granny smith apples , 3 tablespoons fresh lemon juice, 28 grams unsalted butter, 1 ½ teaspoons ground cinnamon, ¼ teaspoon ground nutmeg, 73 grams dark brown sugar
Stir cornstarch and water in a cup to make a liquid slurry. Pour onto apple filling and stir until thickened.
10 grams cornstarch, 1 tablespoon water
Remove pan from heat and set aside to cool.
Assemble
Use a 3/4 inch melon ball scoop or spoon to remove center from cupcake dome. Fill the whole with apple pie filling level with the top of the cupcake.
Pipe frosting onto the cupcake to cover the filling inside.