Mustard Greens with Yogurt-Parmesan Dressing

Preheat oven to 350 degrees.
Arrange bread cubes in a single layer in a jelly-roll pan. Place bacon slices over bread cubes, so that most of bread is covered. Bake 25 to 30 minutes or until bacon and bread are crisp. Remove from oven and allow to cool.
Meanwhile, stir together shallot, vinegar, lemon zest and lemon juice in a medium bowl. Let stand 10 minutes. Whisk in yogurt, oil, and grated cheese.
Crumble bacon; toss bacon and croutons with greens. Arrange salad on a platter. Drizzle 3 to 4 Tbsp. dressing over salad. Sprinkle with salt and pepper. Serve immediately with remaining dressing.