Lightly coat a griddle or grill pan with oil. (Alternatively, Preheat the oven to 400 degrees and line a baking sheet with non-stick foil or foil sprayed with cooking spray.)
Heat the griddle or grill pan on high. Lay the squash slices down in a single layer. Brush with additional sauce. Cook for about 8 minutes, or until the underside is well browned and flip.