Baby Eggplant, Olive, and Herb-Cheese Frittata

Name: Baby Eggplant, Olive, and Herb-Cheese Frittata
Yield: makes 2 Servings
Ingredients: 2 tablespoons olive oil; 5 baby (plum-size) purple eggplants, stemmed, split lengthwise; 4 large eggs; 3 tablespoons coarsely chopped pitted brine-packed green olives; 2 tablespoons chopped fresh basil; 1/4 teaspoon salt; 1 5.2-ounce package Boursin cheese with herbs and garlic, divided