1. Preheat oven to 180°C (350°F). Line a 7 inches square baking pan* with baking parchment, grease lightly, and set aside. Melt the butter and let it cool down a bit. Crumble the Oreo cookies and set them aside.

2. Add the melted butter and sugar to a large bowl. Mix until well combined. Add the egg and vanilla extract and mix well. In a second bowl mix the flour, cocoa powder, and salt until well combined. Add to the bowl with the wet ingredients and mix until just combined. Add the chocolate chips and crumbled Oreos and fold them in. Transfer the batter to the prepared baking pan, smooth out the top, and bake for about 18-20 minutes. Check with a toothpick – the brownies are done when the toothpick comes out mostly clean. Some moist crumbs are fine. Remove from oven and let cool completely, then cut into 25 pieces.

3. Melt the chocolate coating – if the chocolate sauce is too thick, add a little coconut oil and stir it in. Dip the brownies into the chocolate (cover at least the top and sides), let them drip off a bit, then place them on either a cooling rack* or a piece of baking parchment. Separate the Oreo cookies, remove the cream filling and then press a cookie on top of each chocolate while they are still warm and allow them to cool/dry. Store in an airtight container in a cool place.