I like my pizza crispy, so I increased the cooking time by a few minutes.
Non-Dairy: Replace the cheese with non-dairy cheese such as Daiya, Follow your Heart, Go Veggie, Field Roast Cheeses (my favorite). Replace the egg with an Egg substitute- there are plenty of them on the market; Ener-G, Bob’s Red Mill, Orgran brands just to name a few.
Non-meat: Just leave off! 🙂
P.S. If you are in a super hurry…you can get a cauliflower pizza crust at Whole Food or Trader Joe’s…just remember if you are a vegan to check the ingredients, I have not found one that is vegan, as they all contain dairy products. However, if you buy your crust, you’re missing out on a very fun cooking experience.