1. Heat a large grill pan coated with cooking spray over medium-high heat.

2. Cut plantain in half lengthwise; cut each half crosswise into 2 pieces. Spray plantain pieces with cooking spray; grill 4 minutes on each side or until golden and slightly soft. Sprinkle with 1/8 teaspoon salt.
   
3. Drizzle fish with juice; sprinkle with 1/8 teaspoon salt and minced cilantro. Grill 4 minutes on each side or until fish flakes easily when tested with a fork. Top fish with salsa and sour cream, and serve with plantain pieces. Garnish with chopped cilantro, if desired.

Ingredients:

Olive oil-flavored cooking spray
1 underripe plantain
1/4 teaspoon salt, divided
2 (6-ounce) grouper fillets (about 1/2 inch thick)
1 tablespoon fresh lime juice
1 tablespoon minced fresh cilantro
1/2 cup bottled green salsa
2 tablespoons reduced-fat sour cream
Chopped cilantro (optional)