Preheat your oven to 190ºc/170ºc fan and prep your 10″ cast iron skillet if need be. (I lightly grease mine.)
Melt the unsalted butter and dark chocolate together until fully melted.
Leave the dark chocolate and butter mixture to cool for 10 minutes.
Add the eggs and sugar to a bowl, and whisk for several minutes until doubled in sized, mousse like and the whisk leaves a trail in the mixture.
Fold through the melted chocolate and butter mixture.
Fold through the plain flour, cocoa powder, and sea salt.
Then, evenly fold through the chocolate chips.
Pour into your prepared skillet, smooth over, and bake for 25-30 minutes, until there is a small wobble in the middle
Insert a skewer into the brownie to check it - it should have a couple of crumbs/gooey bits on it so its still slightly gooey, but it shouldn't be covered!
Remove the brownie from the oven CAREFULLY as the skillet will be EXTREMELY hot!
Leave to cool slightly - If serving immediately, dollop over some ice cream of your choice (I used salted caramel Ice cream) and drizzle with melted chocolate! Enjoy!
Notes
As its a brownie, I used all white chocolate chips as they're my favourite. I wouldn’t use more than 300g as it might not bake properly - but you can use a mixture of chocolate chips if you like!
The Ice-Cream and the chocolate on top isn't essential to the recipe, and its up to you how much you use - I just think its oooey-gooey perfection!
This recipe was update in July 2022, the original recipe was: 150g butter, 250g dark chocolate, 200g caster sugar, 4 medium eggs, 90g plain flour, 30g cocoa powder, 250g white chocolate chips