Preparation

Chop jalapeño peppers in a food processor fitted with a chopping blade. Remove and mix with the mayonnaise. Set aside. Without washing the food processor bowl, add the tuna, scallions, and onion and pulse several times until ingredients are finely chopped. Add salt and pepper to taste. Form into 2 patties, about 4 inches in diameter and 1/2 inch thick. Heat a nonstick skillet over medium-high heat and coat with olive oil spray. Add the burgers and cook 2 minutes. Turn and cook 2 minutes longer. Place each burger on the bottom half of a hamburger roll. Place several slices of tomato on each burger and lettuce leaves over the tomato. Spread the mayonnaise on the top half of the roll and close.