Preheat oven to 350 degrees fahrenheit
Cut squash in half and scrape out the seeds
Place face down in a pyrex dish with 1/2 inch of hot water and cook for 30 minutes While its in the oven, cook the bacon in a pan until crispy, set aside and leave the bacon fat in the pan
Add 2 of the sliced onions and celery to the pan and then add the beef
Season with salt and pepper to taste and your cinnamon
Continue stirring until the beef is finished, remove from heat and place in a bowl
Remove the squash from the oven, when you can handle it scrape out some of the guts, leaving ~1/4 inch of squash, add squash to bowl with meat
Crumble your bacon and add that to the bowl as well
Mix well and then stuff your squashes with the beef mixture and place back in the 350 degree oven for 20 minutes
While your squash are baking, add your reserved onion to your sauté pan and cook them over low heat with your balsamic to caramelize them
Remove squash from oven, top with caramelized onions and Enjoy
