It’s not just burgers and fries ringing the cash registers at McDonald’s.

The fast-food giant’s shares hit an all-time high after the company said surging demand for recently introduced smoothies, lattes and strawberry lemonade has boosted business, fueling a 15-percent jump in second-quarter profit.

Shares of Mickey D’s — which have risen more than 20 percent during the past year — yesterday soared to $89.57 before closing up $2.02, or 2.3 percent, at $88.56.

After outpacing rivals during the recession, analysts say McDonald’s is extending its lead with an expanding menu that’s tempting diners to drop in between regular mealtimes.

While fancier beverage choices are fattening margins, healthier items such as oatmeal for breakfast are broadening the customer base.

The new menu items have helped McDonald’s hike prices twice this spring without seeing significant resistance from consumers, executives said. The chain plans to import some of its “premium” hamburgers that have been popular in Europe into the US.

“We aren’t seeing any dramatic spike in the usage of our dollar menus,” financial chief Peter Bensen said.