The precooked bacon will crisp up perfectly when baked with the rest of the appetizer ingredients. When not precooked, many times the bacon will be greasy and not crispy. Also when precooking the bacon
most of the grease will have been cooked off, making it easier to wrap around the appetizer ingredients and preventing the appetizers from setting in so much grease as they cook. The bacon can also be precooked ahead of schedule and kept in the refrigerator, allowing you more time for other preparations.