Squash halves stuffed with ground beef

6 medium yellow summer squash and or zucchini
salt and pepper
1 pound ground beef
1/2 cup finely chopped celery
1/2 cup green onion
2 Tbls butter (I skipped this)
1 cup tomato sauce
2 slices bread, torn in small pieces
grated Parmesan cheese

Slice squash in half, lengthwise and par boil for 20 minutes.  Drain and scoop out (like you would for twice baked potatoes).  Mash up and add salt and pepper.
Brown onions , celery and ground beef in butter. If you have grease afterwards, drain the grease.
Add tomato sauce, squash and bread crumbs.
Place squash halves in a  9 by 13 dish, sprayed with Pam.  Scoop the meat-squash mixture into shells.  Top with Parmesan cheese.  Bake in a 350 degree oven for 30 minutes.