In a food processor, add the cookies, brown sugar, cinnamon and nutmeg and blend it all together until a fine sand-like texture. Melt the butter. Add the melted butter to the food processor and blend it together with the blended cookies.
200 g digestive or graham crackers,½ teaspoon ground nutmeg,1,5 teaspoon ground cinnamon,1,5 tablespoon dark brown sugar,50 g butter