It is a variant of the Whopper, with a burger patty made from a meat alternative provided by Impossible Foods.

[26] In October 2019, Restaurant Brands International reported strong growth in sales, attributed to the popularity of the Impossible Whopper.

[30] Burger King expanded the Impossible Whopper to Canada in 2021, first in Ontario in March and then nationwide in April.

[17][33] Nutritionist Mhairi Brown said: "It's difficult to say which one is healthier, because ultimately we know a burger is not a healthy choice.

[38] Megan Schaltegger of Delish found that the burger tasted "nearly identical to an OG Whopper", saying that she double-checked her receipt to make sure it really was not meat.

[35] Meat industry lobbyist Eric Bohl likewise said "If I didn't know what I was eating, I would have no idea it was not beef.

Despite being a meat-eater, Villas-Boas continued buying the Impossible Whopper, saying that "reducing the amount of meat in my diet can only be a good thing".

[40] He concluded: "The product is close enough to beef that your brain is willing to fill in the rest of the flavors, even if somewhere in the dark recesses of your cerebral cortex, you know it's all a lie.

[37] Similarly, the Tampa Bay Times's Christopher Spata said that eating the two versions together made the Impossible Whopper feel inadequate.

[13] Alison Cook of the Houston Chronicle said that although the patty differed from the regular Whopper in taste and texture, this did not matter too much because of the burger's lavish condiments.

[14][42] Nonetheless, Rothbarth expressed approval for Burger King's decision to introduce the Impossible Whopper.

[42] Food blogger Matt Taylor said the burger "didn't taste exactly like meat, but fairly similar"; he concluded that it was not quite as good as a beef Whopper but that some consumers might not be able to tell the difference.

[36] The Spoon's Chris Albrecht said it was good but "definitely wouldn't fool a meat eater", concluding that he would order one again in the future for environmental reasons.

[15] One called it a "solid meatless option", while the other concluded that like the regular Whopper, it has the characteristic low quality of fast food.

[10][12] Customers who want to avoid cross-contamination with meat products can ask for it to be prepared separately, in an oven or a microwave instead of on the grill.

[25] Burger King has also said that some vegans are not concerned about cross-contamination from cooking food on the same grill as meat products.