Preheat oven to 400°F. Cut one sheet of Party Rolls (12 rolls) in half horizontally. Transfer both halves, cut-side-up to a prepared baking sheet. Brush with olive oil.
Top with mozzarella, pear, blue cheese, and walnuts. Bake for 10 minutes, or until cheese is melted and the edges are starting to lightly brown.
Meanwhile, sauté onion in 1 tablespoon of olive oil in a small pan over medium high heat. Cook until softened, about 5 minutes.
In a food processor, combine sautéed onions, remaining olive oil, walnuts, blue cheese, honey, salt and pepper. Puree until smooth. Set aside. (If needed, add a bit of water to thin out sauce.)
Once flatbread is finished baking, remove from oven and top with arugula. Drizzle on the walnut and blue cheese sauce. Serve.
Recipe adapted from: https://thenovicechefblog.com