Preheat oven to 450°F.
Microwave the Acorn Squash 1-2 minutes on high to soften slightly so easier to cut.
Cut Squash in half with a sharp knife. (Note: if it is still too hard to cut, microwave for another minute.)
Scrape out the seeds and pulp. Rub cooking oil on the cut edges.
Place the two halves of squash, cut side down, on a flat baking pan.
Bake at 450 F for 20 minutes or until the squash is soft when poked with a fork.
While the squash is cooking, prepare the Yumbini according to package directions and set aside.
If using dried fruit, place it in a small bowl of water to plump up.
If using fresh apple or pear, chop into small pieces. Eat the other pear or apple half as an appetizer.
Chop the nuts.
If using dried fruit, drain off the water and discard. Stir together the Yumbini, fruit and nuts.
When the squash is soft, remove from oven and flip "cup side" up. Fill the Yumbini mixture into the squash, pressing down and mounding it up in the center.
Top each Yumbini-filled squash half with a very thin slice (1/2 Tbsp) of butter.
Return to the oven and bake another 10 minutes, until hot and butter has melted.
To eat, scoop the Yumbini and squash out of the "bowl" made of the squash skin. (The skin is edible but probably pretty tough!)
Serve with a green salad. You and your meal-mate will be stuffed!