Preheat the oven to 180C and spray your cast iron pan with non-stick spray
In a saucepan, add the butter, ½-cup chocolate and cocoa powder. Melt over medium heat until fully combined. Remove from heat and cool
In a large bowl or stand mixer, whisk together the eggs and sugar until light in colour and fluffy
Pour the cooled chocolate/butter mixture into the egg mixture and continue to whisk.
Once combined, use a wooden spoon to stir in the flour, xanthan gum and collagen.
Now slowly stir in ½ cup of chocolate chips
Pour the batter into the cast iron pan and spread evenly
Sprinkle a handful of chocolate chips on top and bake for 25 minutes or so.
Now melt together the remaining 1/2 cup of chocolate and 1 tsp butter and drizzle on top of the warm brownie.
Eat warm and top with coconut cream, ice cream or even Kahlua for real decadence!