Grilled Cardamom-Scented Pineapple with Vanilla Ice Cream

Name: Grilled Cardamom-Scented Pineapple with Vanilla Ice Cream
Yield: 6 Servings
Ingredients: 1/3 cup mild-flavored (light) molasses; 3 tablespoons unsalted butter, cut into small pieces; 8 whole cardamom pods, lightly cracked; 2 teaspoons fresh lime juice; 1 1/2 pineapples, peeled, cut crosswise into twelve 3/4-inch-thick rounds; 2 tablespoons peanut oil; Vanilla ice cream