Preheat the oven to 160°C
Melt the coconut oil and chocolate on a low heat, take it off the heat and leave to the side.
Whisk the eggs in a bowl, and add the coconut sugar and vanilla and beat together until fully combined.
Once the chocolate has cooled a little, pour in with the eggs and sugar mix.
Add the flour and a pinch of salt
Pour the mix into a tray lined with baking paper and marble in the warmed peanut butter
Bake for 25-30 mins, then let them cool. The outside of the brownies should be crispy and the inside gooey. Cut into squares.