It’s National Pizza Party Day, and what better way to celebrate than with a vegan cheese pizza? Help make this a reality by tweeting at Papa John’s and Little Caesars TODAY!

Recognizing the sizzling demand for vegan food, Papa John’s UK recently launched not one, but three vegan pizza flavors, along with marmite scrolls--and sold out within 24 hours. And this week, the UK chain added to the lineup with a vegan hot dog pizza.

Papa John’s UK isn’t the only pizza giant to cater to compassionate eaters: Pizza Hut UK, Domino’s Australia and New Zealand, and Blaze Pizza are also catering to the massive, growing market of vegan eaters.

But Little Caesars and Papa John’s US are falling behind by serving misery with every single slice of mozzarella. Each year, over a half million cows languish on dairy farms, forcibly impregnated and separated from their babies, to churn out milk for their cheese supplier Leprino Foods.

More than 100,000 of you have signed Compassion Over Killing’s petition urging Little Caesars and Papa John’s to take a slice out of cruelty by offering vegan cheese. By dishing out vegan pizza, the pizza giants will make kinder, healthier, and more sustainable options more accessible to millions of people nationwide.

Help the chains see the sizzling demand for vegan pizza TODAY: Send a quick tweet!

Thanks for helping us make compassionate eating business as usual!