Preparation Steps

• Preheat oven to 350°F (175°C). Grease a 9- or 10-inch round cake pan, a 10-inch round pie plate, or a 9-inch square pan with nonstick cooking spray.
• In a large skillet, melt 14g butter over medium heat. Add the sliced apples, 25g granulated sugar, and 0.5 tsp cinnamon. Cook for about 3-4 minutes, until the apples just start to turn opaque but are still white. Remove from heat and let cool.
• In a medium bowl, whisk together the all-purpose flour, baking powder, salt, and 1 tsp cinnamon for the cake. Set aside.
• In a large bowl, stir together 57g melted butter, 150g granulated sugar, and the egg. Stir in the milk. Add the dry ingredients to the wet ingredients and stir until just combined. Pour the batter into the prepared pan.
• Sprinkle the cooled apples evenly over the top of the cake batter.
• To make the streusel topping, stir together 57g melted butter, 200g packed brown sugar, 16g all-purpose flour, and 2 tsp cinnamon. Sprinkle this mixture evenly over the apples.
• Bake for 30-35 minutes, or until a toothpick inserted into the center of the cake comes out clean.
• Let cool before serving. Store covered in the refrigerator for up to 4 days or freeze for up to a month.