Vegan Philly cheesesteaks are my favorite guilty pleasure and, living in Philly I have tried a lot. I personally best love the popular vegan cheesesteak and cheesesteak pizza at the beloved vegan spot Blackbird Pizzeria. It's made with their homemade rosemary garlic seitan, grilled onion, green peppers, garlic "butter," vegan "cheese whiz" and vegan Violife mozzarella cheese. This one is heavy on creamy cheeses and lighter on the "meat," which is really just a stopping. This pizza makes my mouth water and it makes for the most delicious comfort food.