Preheat the oven to 350℉ and grease a 9-inch springform pan and line it with a circle of parchment paper.
In a large bowl, beat together the ½ cup unsalted butter and ¾ cup granulated sugar until light and fluffy. Beat in the 2 large eggs, one at a time.
Whisk together the 1 ¼ cups oat flour, ¼ cup almond flour, 1 ½ teaspoons baking powder, 1 teaspoon cinnamon, and ¼ teaspoon fine sea salt. Fold the dry ingredients into the creamed mixture along with the 3 tablespoons cream. Fold in the 2 apples that have been peeled and chopped. Batter will be thick.
Spoon the batter into the prepared pan and use a rubber spatula to smooth the top. Rest the batter for 20 minutes, then place in the oven and bake for 50-60 minutes, until a tester comes out clean.
Place the pan on a wire rack to cool for 10 minutes, then remove it from the pan to cool completely. Dust with confectioner’s sugar if you like, before serving with whipped cream.
Notes
Use a springform pan. I love using a springform pan for thick cakes; it makes it so much easier to remove from the pan after being baked. I reccommend using a 9-inch cake pan, either a springform or a regular pan, so that the cake bakes evenly.
Fresh apples. Make sure to use fresh, crisp apples in this cake so that they retain their shape during baking.
Another spice. Either leave out the cinnamon for a super traditional take on Irish apple cake, or swap in ginger or nutmeg.
Dairy-free. Use non-dairy butter and non-dairy milk for a dairy-free version.
Serve warm or cold. With ice cream, custard, or whipped cream! For extra deliciousness, drizzle slices with salted caramel sauce.