Grilled squash vinaigrette rtha stewart l

1. Place squash in a steamer over boiling water, steam for 6 to 7 minutes.
2. It will still be firm.
3. Meanwhile, heat charcoal grill or cast-iron grill pan. Brush squash slices with 1 tablespoon of the olive oil and grill until tender and browned.
4. Arrange slices on a platter.
5. In a small bowl, combine vinegar, lemon juice, and salt and pepper to taste and slowly whisk in the remaining olive oil. Pour over the grilled squash.
6. Garnishi with basil.