01 - Preheat oven to 350°F. Lightly grease a 9x13-inch baking pan and line with parchment paper for easy removal.
02 - In a large mixing bowl, whisk together sweet rice flour, sugar, baking powder, and salt until evenly blended.
03 - In a separate bowl, whisk coconut milk, whole milk, eggs, melted butter, and vanilla extract until smooth and fully incorporated.
04 - Pour wet ingredients into dry ingredients. Fold with spatula or whisk until just combined and smooth. Avoid overmixing to prevent tough texture.
05 - Transfer batter to prepared pan. Gently tap pan on counter several times to release trapped air bubbles.
06 - Sprinkle shredded coconut evenly across surface of batter.
07 - Bake for 55 to 60 minutes until edges are golden brown and a toothpick inserted in center comes out mostly clean with moist crumbs.
08 - Cool completely in pan on wire rack before slicing into squares or bars. This ensures clean cuts and proper texture development.