For the stewed apples: Slice the apples into thin quarter rounds. Put the apples, sugar and apple peels in a dish and cover with cling film. Microwave at 600 W for about 4 minutes.
The moisture comes from the apples like this, 2 to 3 cm at the bottom. Peel off the cling film and microwave again at 600 W for about 4 minutes.
After 2 minutes, take out the dish and stir the contents well.
Once you've finished microwaving, the moisture should have evaporated. (if there's still some moisture leftover, microwave again.) Stir quickly and leave to cool.
After the apples have cooled down, chill in the fridge. In half a day or overnight, the apples will be coloured pink like this. Discard the peels.
I like to eat a generous portion of the apples with yogurt. I divided it into 2 portions and froze the leftovers.
Crush the biscuits finely in a food processor (or bash in a plastic bag with a rolling pin). Add the melted butter and spread the mixture on the bottom of the cake tin.
Leave all the ingredients at room temperature. Grease the cake tin with butter. Microwave the sweet potato and peel to obtain 200 g.
Make the filling: Put all the ingredients in a mixer and mix until smooth. If the mixer becomes stuck, adjust the content with a plastic spatula.
Add the stewed apples and stir quickly. Pour the filling into the cake tin. Bake for about 50 minutes in an oven pre-heated around 160-170°C.
I baked half of the listed ingredients into a 15 cm round cake tin. I sprinkled diced almonds along the sides before baking.
Story Behind this Recipe
I put together my three favorite things: sweet potatoes, Jonathan apples and cheese cake. As I had expected the cake tasted brilliant!! I put this into a recipe with quantities you can easily remember.
I use a food processor and mixer so it is important to leave all the ingredients at room temperature to be easily handled. You can freeze the stewed apples so when Jonathan apples are in season, prepare a large batch in advance! You can omit the stewed apples and crust and just bake the batter as well.