Mushrooms, Caramelized Onions, and Goat Cheese Pasta Ingredients:  2 tablespoons butter 4 tablespoons olive oil 3 onions, chopped 1 teaspoon salt 1/2 teaspoon sugar 1 pound baby Bella mushrooms, brushed clean, cut into 1/4-inch slices 3 tablespoons chopped fresh parsley 1/4 teaspoon fresh-ground black pepper 3/4 pound pasta 3 ounces soft goat cheese, such