Stuffed-Crust Pizza

I’m transitioning slowly into eating vegetarian/vegan food (still trying some meat/dairy based dishes for now so I’ll know how good the vegetarian/vegan versions are at imitating it) but my dad will never be that way and boy was he excited when he saw this pizza:

He ended up eating half of this all by himself ! You have to eat it quickly after it’s out of the oven if you want to experience any of the stretch effect of the mozzarella cheese in the crust. While it really wasn’t a bad pizza, I’d be so excited to see if it’s possible to do a vegan take on this.