Vidalia Sweet Onion Dip

1 cup mayonnaise

2 cups shredded Swiss cheese

½ cup grated Parmesan cheese

2 cups thinly sliced Vidalia sweet onion

hot sauce, or to taste

Preheat oven to 350 degrees F (175 degrees C).

Stir the mayonnaise, Swiss cheese, Parmesan cheese, Vidalia onion, and hot sauce together in a casserole dish.

Bake in the preheated oven until the edges are golden brown, 30 to 35 minutes. Allow to cool 10 minutes before serving.