Warm Gruyere, Bacon and Caramelized Onion Dip Ingredients 2 tablespoons Olive Oil 3½ cups chopped onion 1 teaspoon sugar 2 ounces Gruyère cheese, shredded plus additional for sprinkling on top 2 tablespoons chopped fresh chives, divided ⅓ cup canola mayonnaise ⅓ cup light sour cream ¼ teaspoon salt ¼ teaspoon black pepper 3 bacon slices,