Heat oven to 400˚F. In small bowl, mix together bitter orange marinade, olive oil, lemon juice, cilantro and garlic. Season with Adobo Light, to taste; set aside.
Unfold banana leaf. Cut off tough rib that runs along bottom edge of leaf with kitchen shears. Carefully cut leaf into 4 (8-inch) pieces.
Place tilapia fillet in center of banana leaf; season with Adobo Light, to taste. Stir reserved bitter orange mixture to combine; spoon 2 tbsp. mixture over fish. Top fish with ¼ cup each peppers and onions. Fold two ends over fish to enclose; fold in two edges to form packet. Using kitchen twine, tie packet to secure; transfer to baking sheet. Repeat with remaining ingredients to form 4 packets.
Bake until fish is opaque and flakes easily with fork, 20 minutes; transfer to plates. Cut ties and discard. Open packets (banana leaves are not edible). Serve immediately.
This Tilapia in Banana Leaf recipe makes a great “company’s-coming” main course. The reason: The packets of fish and vegetables can be assembled ahead of time! To do, prepare the Tilapia in Banana leaf recipe through step 3. Then, transfer pre-made packets to the refrigerator up to four hours ahead of time. Then, bake and serve as instructed.