Cut the bananas into not so small pieces. Heat the butter (a little more than warm) and put in the banana pieces and cook for two minutes.
Add the sugar and continue cooking till it is completely done. Then add the lemon juice and continue cooking.
In another pan, melt the cut pieces of chocolate and the cream and cook on a slow flame. Spread the cooked banana evenly on the chocolate slices.
Now decorate the chocolate slices with the melted chocolate-cream mixture and serve with a scoop of vanilla ice cream on its side.