Combine onion, green onions, chile, allspice, five-spice, nutmeg, thyme, salt and pepper in a food processor. Process until combined. Add molasses, olive oil and soy sauce and process until smooth.
Place chicken wings in a large freezer bag or shallow baking dish. Pour marinade over the chicken and toss to coat well. Marinate in the refrigerator at least 3 hours, but preferably overnight.
When ready to cook the wings, preheat the grill to 450°F.
Place wings on the grill over direct heat and cook, flipping every 5 minutes, for a total of 20 minutes.
Baste the wings with melted butter and cook, flipping once or twice, until an internal temperature of 165°F is reached, another 5-10 minutes. Serve hot.
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