Prepare 2 ramekins with a diameter of 13 cm. Grease each ramekin with butter and dust with cocoa powder.
80 g unsalted butter, 12 g cocoa powder
Preheat the oven to 180°C.
Melt the dark/milk chocolate with butter in the microwave or in a water bath. Let it cool.
100 g dark / milk chocolate, 80 g unsalted butter
Whisk eggs with crystal sugar until creamy. Pour in the chocolate mixture and stir. Then whisk in the flour and cocoa powder. Slowly stir everything together with a rubber spatula or a wooden spoon. The batter will be thick.
2 eggs, 110 g crystal sugar, 15 g all-purpose flour
Pour the batter into greased and dusted ramekins to 3/4 of the ramekins. Place ramekins in the oven and bake for 20 minutes. The cakes will be still soft in the center even after 20 minutes.
Take the lava cakes out of the oven and place them on the heat-resistant mat. The tops of the cakes are not even, they can have bumps, or they can get over the ramekin.
Allow to cool for 10 minutes. The top should fall a little but if not - use a fork to get the cake inside the ramekin and make an even surface. On top I put a thin layer of cold milk chocolate right from the fridge, then dust the tops with cocoa powder (or just dust the tops!) . Cakes should be eaten while they're still warm right from the ramekins.
12 g cocoa powder