Sugar Rain (itch)

Thank me later: 1/4 cup all purpose flour1/4 cup granulated sugar2 tablespoons unsweetened cocoa powder1/2 teaspoon baking powder1 pinch salt3 tablespoons unsalted butter (melted)3 tablespoons whole milk1 egg (smallish, weighing around 43 grams out of the shell)1/4 teaspoon vanilla extract1 ounce chocolate 1 tablespoon waterberries (optional)ice cream (optional) microwave for 2 minutes