Last week, Burger King proved a delicious meat-free burger was not "impossible" with the launch of its Impossible Burger pilot at 59 locations around St. Louis—making it the biggest chain to test the virally popular plant-based patty.

And as the battle for the best meatless burger ramps up, McDonald's is being left behind by its biggest rival—who is demonstrating that a national fast-food chain must cater to a new generation of consumers by offering a healthy and tasty meat-free burger.

As 160,000 +  consumers strong, let's turn up the pressure on McDonald's by telling them that if Burger King can do it, a meatless burger is no longer "impossible" Click here to tweet a message today.