Place all ingredients in processor. Blend until finely chopped. Season to taste with salt and pepper. DO AHEAD: Can be made 1 day ahead. Cover and chill. Whisk shallot, vinegar, 2 tablespoons chopped parsley, mustard, and garlic in medium bowl. Gradually whisk in oil. Season to taste with salt and pepper. DO AHEAD: vinaigrette can be made 1 day ahead. Cover and chill. Spread 1 tablespoon pesto over each baguette slice. Sprinkle parsley over crostini. Mix baby greens, artichoke hearts, and cherry tomatoes in very large bowl. Toss with enough dressing to coat lightly. Sprinkle feta over. Serve salad with crostini.