
Preheat the oven to 350°F (177°C). Lightly grease an 8-inch square baking pan and gather all ingredients.

In a medium bowl, whisk together the sweet rice flour, sugar, baking soda, cocoa powder, and salt until evenly combined.

Place the butter and chocolate chips in a microwave-safe bowl. Microwave in 15-second intervals, stirring after each one, until smooth and fully melted. Let the mixture cool until just lukewarm.


Transfer the melted chocolate mixture to a large mixing bowl. Whisk in the evaporated milk, egg, and vanilla extract until smooth and well blended.

Add the dry ingredients to the wet mixture in 3 additions, mixing on low speed or whisking gently after each addition. Stir just until the batter is smooth and no dry streaks remain.


Pour the batter into the prepared pan and tap the pan lightly on the counter to release any large air bubbles.

Bake for 35 to 45 minutes, or until the center is set and a toothpick inserted in the middle comes out mostly clean. The cake may rise in the oven and settle slightly as it cools.

Let the cake cool completely in the pan before slicing. Serve as is or dust with powdered sugar if desired.
