01 -
Preheat the oven to 350°F (175°C). Line an 8 by 8-inch (20 by 20 cm) baking pan with parchment paper.
02 -
In a medium bowl, whisk together mochiko flour, cocoa powder, sugar and baking powder until evenly combined.
03 -
In a large bowl, whisk together melted butter, eggs, milk, and vanilla extract until smooth and no egg streaks remain.
04 -
Add the dry ingredients to the wet mixture. Mix until thoroughly blended into a smooth batter.
05 -
Pour batter into the prepared baking pan. Sprinkle the chopped chocolate evenly across the surface. Bake for 60-70 minutes, or until the mochi is set and a toothpick inserted comes out mostly clean.
06 -
Allow the mochi brownies to cool completely before slicing and serving.