The neighborhood held a cook-off to see who could bake the tastiest dessert.

cook-off 是由动词 cook（烹饪）和副词 off（离开、结束）组成的复合名词，字面意思是"烹饪对决"。这种比赛形式通常指参赛者在规定时间内现场烹饪，由评委品尝打分。