Instructions
- Preheat Oven to 350°F.
- Chop yellow squash and onion into small, uniform pieces.
- Add the squash and onion to a medium sized pot and cook in the butter over medium heat until soft and mushy.
- Season cooked mixture to taste.
- Beat the egg with a fork and add it to the squash mixture.
- Add one cup of shredded cheese to the mixture and stir until melted and mixed.
- Pour mixture into casserole dish and top with remaining cheese.
- Bake for 30 min or until cheese lightly browned.