Turn the oven on to 180C Optionally, you can speed up the cooking process by stabbing the squash in several places before giving a good zap in the microwave, to bring the temperature of the pumpkin quickly up to cooking temperature. I put 1 average butternut squash in a 1000w microwave for around 5-7 mins. Then, bake the pumkin for 20-30 mins until done, assuming have microwaved first, else it may take around an hour to bake, depending on the thickness of the pumpkin. Split the pumpkin in two and remove the seeds. Break the feta cheese onto top of pumpkin, add olive oil, lemon juice and oregano et voila! Bon appetite!