Make your picnic a classy affair with this savory tart on a crispy <a href="https://www.epicurious.com/expert-advice/best-frozen-puff-pastry-article?mbid=synd_yahoo_rss" rel="nofollow noopener" target="_blank" data-ylk="slk:puff pastry" class="link ">puff pastry</a> base. Sprinkle with chives just before serving. <a href="https://www.epicurious.com/recipes/food/views/french-onion-blue-cheese-tart-nadiya-hussain?mbid=synd_yahoo_rss" rel="nofollow noopener" target="_blank" data-ylk="slk:See recipe." class="link ">See recipe.</a>