Mix olive oil, cocoa and sugar in a bowl and whisk them till mixture is smooth.
Mix in both eggs one by one and keep whisking till well incorporated.
Mix together whole wheat flour, almond meal, baking powder, crystalized ginger and keep whisking briskly till mixture becomes smooth and glossy.
Add dark chocolate and pour batter in greased tin.
Bake at 180C for about 20-22 minutes
Before slicing let the brownie sheet cool and cut it into desired size and shape.