Crumble the chocolate to pieces into a deep container, add the butter and sugar and melt. Stir periodically until completely melted.
Add the eggs 1 by 1 while stirring nonstop. Sift the cocoa and flour over the mixture. Add 2/3 of the chopped strawberries. Pour the resulting mixture into a small tray laid out with baking paper. Place the remaining strawberries on top.
Bake in a preheated 356°F (180 °C) oven; during the last 10 min. you can turn it up to 392°F (200 °C). After cooling, cut the brownies into squares.