Slaymill, the mini tarts are really really easy, and you can adjust to make a bigger version, but it's basically:
Homemade or ready made shortcrust pastry, rolled out, cut into a small circle and use to line either a small shallow ramekin (greased or line with baking paper) or other suitable baking dish, lightly brush with butter, then add in slightly browned off pancetta, slightly softened red onion and some chunks of Gruyere so it sits level with the top of the pastry, stick in the oven on 160 degrees for around twenty minutes, although i open the oven half way through and stir the mixture up a bit so it's evenly spread. That's it, easy peasy :)
The chocolate orange cake ingredients:
1 thin skinned orange, chopped up into chunks, skin on.
200g butter
3 eggs
1 cup caster sugar
250g dark chocolate chips
2 cups self raising flour
Grease 22cm cake tin, line with baking paper, use food processor on the ornage chuncks until they are smooth paste, add in the caster sugar and butter and combine, add in eggs one by one, blasting the processor each time.
Pour mixture into a large bowl, add in the chocolate chips and flour then stir until well mixed, transfer mix to the prepared cake tin and bake at 180 degrees in the middle of the oven for between 45 mins to an hour (using the knife test to check the cake isn't drying out or is cooked before expected time etc)
Once it's out of the oven and cooled I dust with icing sugar and put soem fresh slices of orange on for decoration, or filled with dark chocolate ganache for real indulgence :)