Ingredients:
1 medium spaghetti squash
2 tablespoons butter
1 small yellow onion, diced
1/2 cup sour cream
1/2 cup shredded cheddar cheese

Cut the spaghetti squash in half and remove the seeds. Place in a dish with a 1/4 inch of water; microwave for 10 -12 minutes. While the squash is cooking, saute the onions until they are a light brown.
Use a fork to scrape the insides of the squash into a medium bowl, then mix in the onions, cheese, and sour cream. Salt and pepper to taste.
Bake at 350 for 20 minutes.