McDonald's brought its fried apple pie — which was discontinued in 1992 — back in time for America's 250th birthday celebration.

Katherine Tangalakis-Lippert

As America gears up to celebrate its 250th birthday, many fast-food chains are marking the occasion the way they know best: with limited-time desserts loaded with red, white, blue, and plenty of sugar.I taste-tested patriotic dessert promotions from McDonald's, Burger King, Krispy Kreme, and Wienerschnitzel to see which chains delivered a worthy tribute to the nation's semiquincentennial.Some leaned heavily on festive colors or flavors, others on nostalgic Americana. One stood out by doing both.

Krispy Kreme's USA-themed doughnuts

A Krispy Kreme server told Business Insider that not many of the patriotic doughnuts had sold that day.