- 2 cups chopped sweet onions
- 2 cups mayonnaise
- 2 cups shredded Swiss cheese
- Preheat oven to 400 degrees F (200 degrees C). Lightly grease an 8×8 inch baking dish.
- In a medium bowl, mix together sweet onions, mayonnaise and Swiss cheese.
- Transfer mixture to the baking dish. Bake in the preheated oven 20 to 30 minutes, or until bubbly and lightly browned. Cool before serving.