- 1 1/2 pound assorted heirloom tomatoes, cut into 1/3-inch-thick slices
- 1/4 cup extra-virgin olive oil
- 2 tablespoon thinly sliced basil, plus a few leaves for garnish
- 1 1/2 tablespoon red-wine vinegar
- 3/4 teaspoon dijon mustard
- 1/4 teaspoon flaked sea salt
- 1/8 teaspoon freshly ground pepper
- Arrange the tomatoes on a large serving plate. In a 2-cup measuring cup, whisk together the remaining ingredients. Pour the olive oil mixture over the tomato slices. Garnish, if desired.