Ingredients

• 1 1/2 pounds 80% lean ground beef
• 2 teaspoons Cajun seasoning
• 3 scallions, sliced (white and green parts)
• 1/2 cup mayonnaise
• 2 teaspoons Dijon mustard
• 1 teaspoon hot sauce
• 1/4 cup loosely packed fresh flat-leaf parsley leaves, chopped
• 1 celery stalk, finely chopped (about 1/2 cup)
• 1 medium yellow onion, sliced into 1/4-inch rounds
• 1 medium green bell pepper, sliced into 1/4-inch rings
• 1 tablespoon vegetable oil
• 4 sesame seed hamburger buns, split

Instructions

1. SET UP: Prepare a grill or grill pan and heat to medium-high heat.
2. FORM THE PATTIES: Gently mix the ground beef, Cajun seasoning, and scallions. Form into four 1/2-inch-thick patties.
3. MIX THE REMOULADE: Combine the mayonnaise, mustard, hot sauce, parsley, and celery in a small bowl. Refrigerate until needed.
4. GRILL EVERYTHING: Grill the patties, flipping once, to desired doneness, about 4 minutes per side for medium. Brush the onion and green pepper with the oil and grill the vegetables until lightly charred and tender, about 5 minutes total.
5. SERVE: Toast the buns on the grill for a minute or so. Put a patty on the bottom bun and top with remoulade. Add some onion and bell pepper, then add the top bun.