- Active Time : 5 Minutes
- Total Time : 25 Minutes
- Serves : 10
- 2 cups grated Parmesan cheese
- 2 cups mayonnaise
- 2 cups grated onion
Mix ingredients together and spread evenly into baking dish.
Bake at 375 degrees, uncovered for 20 minutes or until bubbly and surface is lightly brown.
Bake it a day ahead of time, refrigerate and reheat before serving for best results.