Take the seeds out of the kabocha squash. Finely slice the onion, massage with a little salt, rinse in water and squeeze out the excess moisture.
Cut the kabocha squash up into small pieces, and take the rind off.
Put the cut up kabocha into a microwave safe plastic container, cover with water then drain, and microwave for 4 minutes. Cook until a chopstick goes through a piece easily.
Mash the kabocha squash up with a spoon and add the onion and mayonnaise and mix while it's still hot.
Add the cheese before the kabocha squash cools down and mix well. Season with salt and pepper.
Mix well, and chill in the refrigerator. Put on serving plates. Garnish with some parsley or green onion if you like (you can omit this).
Story Behind this Recipe
I came up with this recipe in an attempt to get my kids to eat more kabocha squash.
Use processed cheese wedges or sliced cheese or whatever cheese you like! I used cream cheese this time! Cut the cheese into dice.