When I was shopping the other day I noticed a squash I had never tried. Buttercup Squash. After doing some research I came up with this recipe from Cooks.com, with a couple of changes, of course. I cut the Squash in half and removed the seeds. I baked the squash cut side down for 45 minutes. Meanwhile I sauteed chopped onion in a knob of butter. Added ground beef and browned it. After the meat cooled I mixed it with 2 eggs, 1 chopped tomato, 1/4 cup Parmesan Cheese and 1 cup Cheddar Cheese…