8 olives stuffed with pimientos
2 tbsp. ketchup
4 sliced gherkins (or 1 large gherkin, sliced lengthways into 4)
4 romaine lettuce leaves, halved
2 tbsp. lighter mayonnaise
4 seeded burger buns, halved
4 slices 30% reduced-fat Cheddar
4 beef burgers (from a frozen 8-pack)