01 - 
                Preheat your oven to 320°F (160-170°C).
              
              
              
                02 - 
                Line a 20x20 cm (8x8 inch) baking pan with baking paper.
              
              
              
                03 - 
                Melt the dark chocolate and unsalted butter together using a double boiler (bain-marie). Stir until fully combined, then set aside to cool slightly.
              
              
              
                04 - 
                In a separate bowl, crack the eggs and add the vanilla extract. Whisk until well combined. Add the whole milk to the egg mixture and stir until blended.
              
              
              
                05 - 
                Gradually incorporate the melted chocolate and butter mixture into the wet ingredients, stirring until fully combined.
              
              
              
                06 - 
                In another bowl, mix together the glutinous rice flour, cocoa powder, baking powder, salt, and sugar. Stir to combine the dry ingredients evenly.
              
              
              
                07 - 
                Pour the wet mixture into the dry ingredients. Stir until you have a smooth batter.
              
              
              
                08 - 
                Pour the batter into the prepared baking pan, and sift the batter through a sieve as you pour to prevent lumps. Sprinkle chocolate chunks evenly over the top of the batter.
              
              
              
                09 - 
                Bake in the preheated oven for about 55-60 minutes.
              
              
              
                10 - 
                Allow the brownies to cool in the pan before transferring them to a wire rack to cool completely. Once cooled, cut into squares and serve.