01 - Preheat the oven to 350°F. Generously grease a nonstick donut pan with cooking spray or oil.
02 - In a large mixing bowl, whisk together sweet rice flour, granulated sugar, cocoa powder, baking powder, and salt until evenly distributed.
03 - In a separate bowl, whisk eggs, milk, vegetable oil, peppermint extract, and vanilla extract until fully incorporated and smooth.
04 - Pour the wet ingredients into the dry mixture. Stir continuously until a smooth, thick batter forms with no visible lumps.
05 - Transfer batter to a piping bag or use a spoon to distribute evenly into prepared donut pan, filling each cavity approximately three-quarters full.
06 - Bake for 15–18 minutes until donuts spring back when lightly touched. Allow to cool in pan for 5 minutes before transferring to wire rack.
07 - Whisk powdered sugar, cocoa powder, 2 tablespoons milk, and peppermint extract until smooth. Adjust consistency with additional milk if needed for thick, pourable texture.
08 - Dip each cooled donut into glaze, allowing excess to drip off. Immediately sprinkle with crushed peppermint candies. Let glaze set completely before serving.