This German-French recipe is a winner for entertaining guests or making something special for a weekend dinner. Begin with frying up some bacon, to render some of the fat, then cool before crisping. Cook onions with some salt until they’re softened. Create your cheese mixture with fromage blanc, crème fraîche, grated nutmeg, salt, black pepper and cayenne pepper. Lastly, roll pizza dough thin, then transfer it to cast iron to pre-cook. Poke the bubbles that form to ensure an optimally crisp crust. Spread with plenty of cheese, load up with onions and bacon, and crisp to perfection under the broiler. Get Chef John's recipe for Tart Flambee Bacon Onion Tart.