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["Preheat your oven to 150 Celsius.", "", "Put the Oreo cookies in a food processor and blitz till they're reasonably fine, leave the cream centres in, this will help to hold the base together. Line a 9"" spring form pan with baking paper and then spread your cookie crumbs in an even base and part way up the sides.", "", "Melt the first 340g of chocolate and set it aside to cool a bit while you mix your batter.", "", "Having let your cream cheese come to room temperature for a few hours to soften it, put all three packs in a bowl and beat for 2 minutes. Add the condensed milk and vanilla and beat until combined.", "", "Add the 4 eggs one at a time and beat each one in on a slow speed. Once all the eggs are in, add the chocolate slowly and beat slowly until combined.", "", "Pour the batter in to the cake tin with the base and bake for around 1 hour and 5 minutes. This will vary depending on your oven, when it's done, you want it to be reasonably set, not too wobbly.", "", "When it's finished cooking, leave it in the oven for 30 minutes with the heat off and the door shut. Then remove and cool completely on a wire rack (still in the pan). Cover and refrigerate overnight or for 8 hours at least.", "", "Remove the cake from the pan.", "", "To make the Ganache, put the cream in a saucepan, bring to a simmer and then remove from the heat. Add the 340g of chocolate and whisk until it's all melted, then pour over your cake and return to the refrigerator."]
