Ingredients: Servings: 4* 1 small red onion, sliced* 1 tablespoon butter* 1 teaspoon olive oil* 1/2 cup chicken broth, plus*2 tablespoons chicken broth, divided* 1 1/2 teaspoons fresh lemon juice* 1 teaspoon brown sugar* 1 teaspoon garlic, minced* 1 tablespon olive oil* 1/2 teaspoon salt* 1/2 teaspoon...