Caramelized Vidalia Onion Pie - Pizzazzerie

Ingredients

• 2 ½ cups Ritz crackers (finely crushed (about 2 sleeves))
• 1/2 cup melted butter
• 2 tbsp butter
• 3 Vidalia onions (thinly sliced (about 4 cups))
• 2 eggs
• 2 tbsp mayonnaise
• ½ cup sour cream
• ¼ cup milk or half & half
• 1 1/4 cups Gruyère or Swiss cheese (shredded (reserve ¼ cup for topping))
• ½ tsp salt (adjust to taste)
• ¼ tsp pepper
• dash of hot sauce (optional)