This delicious burger recipe is a simple upgrade to the typical beef variation. The patties are a mixture of lamb, feta, and onion, topped with a cucumber-and-onion yogurt sauce. Alongside, are crispy eggplant fries. The key to the coating on these crispy on the outside and tender on the inside fries, is a bath in frothed egg whites and then a toss in panko, aka Japanese breadcrumbs. It’s easy, but with complex flavors—the best kind of dinner recipe.