01 -
In a mixing bowl, combine 2 tablespoons olive oil, 1 tablespoon Dijon mustard, 2 minced garlic cloves, kosher salt, and freshly ground black pepper. Whisk until well emulsified.
02 -
Place chicken breast fillets in a dish or resealable bag. Pour marinade over the chicken, ensuring all pieces are evenly coated. Cover and refrigerate for at least 30 minutes, or up to overnight.
03 -
In a food processor, blend 4 minced garlic cloves, 3 tablespoons Greek yogurt, 2 tablespoons grated Parmesan, 1 tablespoon Dijon mustard, 2 teaspoons red wine vinegar, 1 teaspoon anchovy paste, 0.25 teaspoon salt, 0.25 teaspoon black pepper, and juice of half a lemon until smooth. With the motor running, slowly drizzle in 80 ml olive oil until creamy. Store refrigerated until ready to use.
04 -
Preheat the grill to high heat and allow it to reach temperature for 10 to 15 minutes.
05 -
Remove chicken from marinade, letting excess drain. Place fillets on the hot grill. Cook 3 to 5 minutes per side, depending on thickness, until internal temperature reaches 74°C. Transfer to a plate and allow to rest 5 to 10 minutes.
06 -
Slice brioche buns and place cut-side down on the grill. Toast until lightly golden.
07 -
Spread Caesar dressing on the bottom half of each bun. Layer with romaine lettuce, grilled chicken breast, additional Caesar dressing, and a generous sprinkle of freshly grated Parmesan. Add a squeeze of lemon juice if desired. Top with the remaining bun halves and serve immediately.