3-4tbspcreamadjust according to instructions below
For centre filling:
Approx 1 cup of Nutella
170gchopped dark chocolate 60 – 70% cocoa solids
70gsoft unsalted butter
1tspstrong coffeedissolved in 1 tsp water
105mlgreek yoghurt or hung curddahi
120gplain all-purpose flour
Tart shell and Nutella layer:
In a medium large bowl sift the flour, sugar and baking powder.
Add the cold, chilled butter and rub it gently into the flour till the mixture resembles wet sand. Make sure that the butter doesn’t melt.
Add the vinegar, followed by the cream one tablespoon at a time and try to bring the dough together into a ball. Be careful and do not add too much cream. Be gentle with the dough.
Once the dough comes together, if it seems too soft and flimsy to work with, chill it for a minimum of 30 minutes.
Roll the dough out on a floured surface to roughly ½ inch thickness and transfer it to a loose bottom 9 inch tart pan.
Once you have lined the pan with the dough properly up the edges pour the Nutella (it should be easily spreadable) and spread it into an even layer. Now place this in the freezer while you prepare the brownie layer.
Preheat the oven to 180ºC
Mix the yoghurt and sugar till the sugar dissolves completely. THIS IS IMPORTANT, please do not skip this step.
In a separate microwave safe bowl add the chocolate and butter, melt completely in 20 second increments.
Once the chocolate and butter are meted add it to the yoghurt mixture till well combined and smooth. Make sure the mixture is smooth. Now add the coffee and vanilla and stir to combine.
Sift in the flour, cornflour, cocoa powder, baking powder and salt. Whisk to combine, do not overmix.
Remove the tart shell from the freezer and pour the batter it, smooth out the top with the back of a spoon or spatula.
Bake in the pre-heated oven at 180C for about 50-60 minutes, or until an inserted toothpick comes out with a little bit of moist crumbs attached.
Let this cool completely to room temperature and chill for approximately 30 minutes before cutting and devouring.
Optional: Garnish with fresh berries or whipped cream.