We feature restaurants that are pushing the envelope on some of America's beloved comfort foods. Plan Check in Los Angeles offers the most indulgent burgers, fried chicken and pastrami sandwiches, plus a unique towering doughnut dessert. A food truck in Nashville uses big, fat biscuits for hearty sweet and savory sandwiches. Cold fried chicken and baked potatoes are transformed into imaginative pizzas at Pete Zaaz in Brooklyn. And, in Atlanta, guilty pleasures can be found in creative hot dogs, sausages and fries at HD1.