Hit Up The Frozen Food Section Of Your Grocery Store! When you’ve got a group coming over, grilling an appetizer is a natural. But what? Potstickers! Or, how about cheese sticks, or bread sticks with cheese in the center? Maybe some spring rolls or egg rolls? These frozen foods grill up to become amazing appetizers and sides. Warm the grill up early and enjoy how easy crispy grilled potstickers are!