By Robb M. Stewart

Impossible Foods' flagship plant-based burger began rolling out at Walmart Inc. on Thursday.

The Silicon Valley-based company said Impossible Burger will soon be stocked at almost 2,100 Walmart Supercenter and Walmart Neighborhood Market locations. That will bring the number of bricks-and-mortar grocery stores carrying the product in the U.S. to more than 8,000, am increase of more than 50 times in the food startup's retail footprint in less than six months, it added.

Impossible Burger made its grocery-store debut in September 2019, Impossible said.

Write to Robb M. Stewart at robb.stewart@wsj.com