Green Goddess Sandwich

INGREDIENTS
¼ cup finely chopped chives
¼ cup mayonnaise
¼ cup whole-milk Greek yogurt
1 lemon, halved
2 tablespoons extra-virgin olive oil, plus more for drizzling
Kosher salt, freshly ground pepper
½ head of butter or Bibb lettuce (about 2 ounces), large leaves torn
¼ English cucumber, thinly sliced
1 avocado, thinly sliced
4 slices grainy bread
8 ounces fresh mozzarella, sliced ¼ inch thick
2 cups sprouts (such as broccoli sprouts or alfalfa)

RECIPE PREPARATION
Place chives, mayonnaise, and yogurt in a blender. Add zest and juice of 1 lemon half, then add 2 Tbsp. oil; season with salt and pepper. Purée until smooth.

Squeeze juice from remaining lemon half over lettuce and cucumbers in a medium bowl. Drizzle with oil; season with salt and pepper. Toss to coat.

Divide and smash avocado between 2 slices of bread; season with salt and pepper. Arrange lettuce and cucumbers over. Top with mozzarella and sprouts. Spread remaining 2 slices of bread with ¼ cup green goddess dressing and close sandwiches.