Add some oil to a baking sheet and place the dough on it for 30-60 minutes, or until room temperature.
Preheat oven to 425 degrees and line another baking sheet with parchment paper.
Combine the flour, corn starch, salt, white pepper, 1 tablespoon sriacha, non-dairy milk and water in a bowl. Whisk to combine. In a separate bowl, spread out some panko.
Dredge cauliflower in the wet mixture, allowing the excess to drip off. Place in the panko and coat on all sides. Add the finished floret to the baking sheet and repeat with remaining cauliflower. Place in the oven and bake for 15 minutes. Flip and cook for an additional 10 minutes. Remove from the oven and increase oven heat to 500 degrees.
While the cauliflower is cooking, prepare the bang bang sauce by combining the vegan mayo, rice vinegar and remaining sriracha (you can use 1-3 tablespoons depending on your spice preference) in a bowl. Whisk to combine.
Combine the vegan cream cheese and non-dairy cream in a bowl. Whisk until smooth.
To assemble stretch the dough out on the baking sheet until it is your desired thickness. Spread out the cream cheese mixture to the edge of the dough. Top with the cauliflower, bell pepper and red onion. Place in the oven and bake for 10 minutes. Rotate the baking sheet and cook for another 3-5 minutes.
Remove from the oven, slice and top with the bang bang sauce & cilantro.