Step 1

Combine first 6 ingredients in a small bowl; set aside.

Step 2

Prepare grill or preheat broiler.

Step 3

Rub each tuna steak evenly with olive oil; sprinkle tuna with 1/4 teaspoon salt and 1/4 teaspoon pepper. Dredge tuna in breadcrumbs, shaking off excess.

Step 4

Place tuna on grill rack or broiler pan coated with cooking spray; cook 3 minutes on each side or until fish is medium-rare or desired degree of doneness. Place tuna steaks on individual plates, and top with gremolata.

Step 5

Gremolata (greh-moh-LAH-tah) is a savory relish of lemon rind, garlic, and fresh herbs.