Rustic Breakfast Sandwich | culture: the word on cheese

Ingredients

• 4 or 5 scallions (green part only, coarsely chopped (about ⅓ cup))
• ⅓ cup coarsely chopped Italian parsley leaves
• ½ cup extra-virgin olive oil
• 4½- inch thick slices sourdough bread
• 1 garlic clove (peeled)
• 3 ounces Manchego
• 2 tablespoons white wine vinegar
• Pinch Kosher salt
• 4 extra-large eggs
• 8 very thin slices serrano ham (about 2 ounces total)
• 2 cups loosely packed arugula leaves