1. In a small bowl or ramekin, cover the sun-dried tomatoes with 1/4 cup boiling water and set aside to soak for 10 minutes. Drain and roughly chop the softened sun-dried tomatoes.
2. Place all ingredients in a blender and whirl until smooth.
3. Drizzle dressing on romaine lettuce and toss with optional croutons and Parmesan.
4. Note: I didn't have a lemon so used 3 tablespoons of the tomato water and a couple additional capers.