Preheat oven to 400°. Spray a 9 inch pie pan with non-stick spray.
Brown ground beef in a large skillet with onion, drain off any excess grease and add the seasoning salt and Worcestershire sauce.
Layer ground meat mixture in the bottom of the prepared pie pan. Crumble cooked bacon on top followed by cheese.
In a small bowl whisk together Bisquick, milk and eggs. Pour on top of cheese layer.
Bake for 25 minutes of until knife inserted in center comes out clean.