The classic Southern mix of cheese, mayo, and pimientos brightens a basic burger.
Stir together pimientos, cheese, mayonnaise, and chives. (To store, cover and refrigerate, up to 2 days.)
Heat a grill or grill pan to medium-high. Clean and lightly oil hot grill. Season patties with salt and pepper. Grill 4 minutes per side for medium; during last minute of cooking, top each burger with 3 tablespoons pimiento cheese and cover grill. Serve burgers on buns with desired toppings.