Fudge-Filled Chocolate Brownie Cookie Cake

Chocolate Filling Preparation

1. In a saucepan, combine 600ml milk, 1/3 cup cornstarch, and 1 cup cocoa powder.
2. Mix until smooth.

Cake Batter Preparation

1. In a bowl, combine 3/4 cup + 2 tbsp sugar with the butter (implied by visual).
2. Add 4 eggs to the mixture.
3. Pour in 200ml milk and mix.
4. Incorporate 2 1/2 cups flour and 1 tbsp baking powder, mixing until a smooth batter is formed.

Assembly

1. Scoop a layer of the cake batter into a baking dish.
2. Pour the chocolate filling over the batter.
3. Add a layer of cookies.
4. Add a final layer of the cake batter on top to cover.