It is the birthday period in the chocolate family, October offers us three opportunities to blow the candles ...

This is chocolator junior who started the festivities and as every year I rack my head to make him a beautiful cake. This year I had little time (if at all) and I got taken a little late I admit. On the day I started to make her cake and I saw that I was missing the cream, essential for chocolate ganache makes up the cake in question. Mr. chocolate is being proposed to go fast look for before closing shops (yes I got taken very late ...) it is at full party for our big boy can have a beautiful cake. Did not count on chocolate gentleman who reported the blunder evaporated milk instead of cream (same layout, same color he told me ....) I had this day abandon the planned cake and improvise a quick cake to plant candles chocolator junior in anything other than bread ... 
Since I had a good stock of evaporated milk I tried a cake and eventually all the world has enjoyed.

for a 20 cm x square cake 20 cm : 
200 g chocolate 
20 cl evaporated milk 
100 g of sugar (but you can put 150 g) 
4 medium eggs 
100 g flour 
1 teaspoon baking powder 
25 ml oil 
1 pinch salt

To melt chocolate. Add the evaporated milk and eggs and a pinch of salt. Mix well. Add sugar, flour and baking powder. Add the oil and mix to make smooth paste.

Pour into a greased dish or individual molds. 
I used for my part the square pan "tablet" Demarle (but a mold lined with parchment paper will be fine too) 
Bake at 180 degrees (preheated oven) for 20 to 25 minutes (20 minutes were enough for me) 
If you are using individual molds cook 15 minutes less time will be suitable. 
Test for doneness with the blade of a knife should come out of the cake without a trace.
Turn the cake a once it is cold.

verdict: it is soft, very chocolatey. If you like sweet cakes add 50 g of sugar per 100 g initially planned. 
I served cut into large slices. It is quite brittle, do not cook it in a loaf pan, it would be too difficult to cut. 
Mr. chocolate would have tasted good with custard ... 
You can add nuts (hazelnut powder or crushed nuts , almonds, grated coconut) or white chocolate chips or milk.