Kids (and adults) will gobble up these savory snacks.
Stir together tuna, drained, mayonnaise, and fresh lemon juice. Season with coarse salt and ground pepper.
Heat broiler of toaster oven (or oven). On a foil-lined baking sheet, arrange crackers. Top with tuna mixture and shredded cheddar. Broil until cheese has melted, 2 to 3 minutes.