Use a 8" x12¼" (20x30cm) brownie tray for this, which works perfectly.
Ingredients
For the cake
140g brown sugar
100g desiccated coconut
125g self raising flour
125 g butter
For the topping
395g can condensed milk
Scooped out insides of 2 passion fruits or granadillas
Instructions
Preheat oven to 180°C or 160°C if using a fan-forced oven.
Combine all ingredients for the cake layer into a food processor (Thermomix: 60 seconds/speed 4)
Press into a cake tray in a level layer
Bake 12-15 minutes
Remove from oven and set aside to cool for 15 minutes. Don't remove from pan.
Meanwhile, in a bowl, combine the passion fruit or granadilla pulp with the condensed milk and mix well.
In a bowl, combine the can of condensed milk and the passion fruit pulp.
After the 15 minutes have passed, spread the mixture over the cake base and return to the oven for 12 minutes, or until the topping is just firm to the touch - it will start going brown, keep an eye on it as you don't want it to burn.
Remove from oven and allow to cool before cutting and store in the fridge.
Recipe by Keeper of the Kitchen at https://www.keeperofthekitchen.com/2017/07/14/passion-fruit-granadilla-slice/