For decoration:
In a saucepan over medium heat, combine sugar and water. Bring it to a boil and stir until it forms a syrup. Add the mini chili peppers to the syrup, reduce the heat to low, and let them simmer for 5-7 minutes. Remove the peppers from the syrup and allow them to cool. Store the peppers in the refrigerator until needed.
For the brownies:
Preheat the oven to 180°C. In a bowl, combine the chili chocolate, dark chocolate, and butter. Melt the mixture using the bain-marie method or in the microwave.
In another bowl, beat the eggs with white and brown sugar until creamy and frothy. Add the melted chocolate and mix well. Gradually add the flour and chili, gently folding until the batter is well combined.
Pour the batter into a greased baking tray and bake in the preheated oven for 30-40 minutes. Once baked, remove the brownies from the oven and let them cool.
Prepare the topping by melting the chocolate and chili powder using the bain-marie method. Once the brownies are completely cooled, cut them into 8-10 round pieces using a cookie cutter. Cover each brownie with the melted chocolate and garnish with a mini chili pepper.