Caramelized Onion, Bacon and Cheese Dip

4 C vidalia onion (or other sweet onion), chopped
1 T olive oil
1 T butter
3 slices bacon
2 oz Gruyère cheese, shredded
2 green onions, chopped
½ C fat-free sour cream
1/3 C low fat mayonnaise
1/4 t salt
black pepper

Heat a large skillet over medium-high heat. Add oil and butter.  When butter is melted, add onion and sauté 5 for minutes, stirring frequently. Reduce heat to low; cook 45-60 minutes or until golden brown, stirring occasionally.

Reserve 2 tablespoons cheese. Combine remaining cheese, caramelized onion and remaining ingredients in a medium bowl and mix well.  Transfer the mixture to a 1-quart glass or ceramic baking dish coated lightly with cooking spray. Top with reserved cheese. Bake at 425° for 20 minutes or until browned and bubbly.

Serve with toasted bread or crackers.