Melt butter in a saucepan on low heat. Once fully melted, add chopped dark chocolate and stir until smooth and shiny. Set aside.
In a large bowl, add eggs, sugar, salt and mix with a whisk for 2 minutes. Add melted butter/chocolate mixture to eggs/sugar/salt and whisk for 1 minute. Add flour and gently mix for 1 minute or until smooth.
Butter cake rings and line with parchment paper. (You can also use a round ramekin by lining with butter and a little flour to make sure the cake comes out)
Carefully pour cake batter into cake ring and fill up to ¾. Bake in a pre-heated oven at 380F for 15 minutes.
Remove from oven and allow chocolate lava cake to cool for 5 minutes before transferring to plate.
Sprinkle with powder sugar and enjoy!
