Crush the Oreos in a food processor until fine crumbs remain.If using a Thermomix: crush the biscuits for 10 seconds, Speed 8.Place the crumbs into a bowl.
Pour over the melted butter and mix to combine.
Press the mixture into the base and sides of a 23cm tart tin with a removable base.Bake for 7 minutes.TIP: if your mixture has shrunk down the sides, use the back of a large spoon to gently push the mixture back up while it's still warm. Set aside.
Heat the cream in the microwave for 1-2 minutes (stirring every 30 seconds), until hot, but not boiling. If using a Thermomix: heat the cream for 4 minutes, 80 degrees, Speed 2.
Place the chocolate into a bowl. Pour the hot cream mixture over the top.
Allow to sit for 5 minutes before stirring with a rubber spatula until smooth and combined. Pour the ganache into the baked Oreo base.
Place into the fridge for a minimum of 4 hours (overnight is best).
When ready to serve, decorate with fresh raspberries.Store in an airtight container in the fridge for up to 1 week.
Notes
RECIPE NOTES & TIPS
Type of cream - this chocolate raspberry tart requires full-fat thickened cream (as it's referred to in Australia) or heavy cream (as it's known in the US).
Storing the tart - the tart will last up to 1 week in an airtight container in the fridge or wrap well and store for up to 3 months in the freezer. Thaw in the fridge overnight before decorating with fresh raspberries.
Refrigerating the tart - because it's made with cream, the tart needs to be refrigerated until you're ready to serve it.
Serving size - up to 20 serves! This is a VERY rich tart, so you'll only need very small pieces.