When it comes to entertaining, there's nothing more convenient than a frozen appetizer, and Costco happens to have quite a ...

Costco sells many prepared and frozen foods that can be served as appetizers, including a package of grilled chicken skewers.

Hosting a Super Bowl party? These top-selling Costco snacks—wings, dips, pizza, and more—are fan favorites for game day.

To find out which supermarket chain carries the best frozen burgers, I compared options from Wegmans, Costco, and Whole Foods. I sampled each patty multiple times, both with and without cheese.