You can microwave a butternut squash, but it's not our recommended ... remember to use a paring knife to cut slits into the vegetable to allow steam to escape. Otherwise you'll have a real mess ...
Cook in the microwave on high for 5 minutes, then carefully uncover. Stir well, then tip in the squash and spinach and stir again. Add the rest of the stock and mix together, then cover with cling ...