The weak U.S. economy is no match for fast-growing Five Guys Burgers and Fries, where the standard hamburger has two patties and french fries are served in a cup with an extra scoop on the side for good measure.

While most U.S. restaurants fight for every dollar, a new crop of indulgent burger chains have bucked the trend by recasting the American food standard with higher-quality ingredients and quirky toppings like fried eggs or pineapple.

The upstart burger joints run the gamut from Five Guys, a 600-unit chain known for its simple menu, fresh ingredients and generous portions, to Bobby’s Burger Palace, Chef Bobby Flay’s small but swanky chain.

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