1 tbsp butter
3 1/2 cups onion, chopped
4 oz gruyere cheese, shredded
2 tbsp fresh chives, chopped and divided
1/3 cup mayonnaise
1/3 cup sour cream
1/4 tsp salt
1/4 tsp pepper
4 bacon slices, cooked and crumbled
Heat a large skillet over medium heat. Melt butter, add onion to pan and sautée 5 minutes, stirring frequently. Reduce heat to low and cook 20 minutes or until golden brown, stirring occasionally.
Reserve 2 tbsp cheese. Combine the rest of the cheese, Caramelized onions, 1 tbsp chives and remaining ingrediants in a bowl.
Transfer to a 1 quart casserole dish lightly coated with cooking spray. Sprinkle with reserved cheese. Bake at 425 degree for 20 minutes or until browned and bubbly.
Sprinkle with remaining 1 tbsp chives and serve.