Chop the parsley, onion, and tomatoes then place in a medium-sized bowl.
Now add the lemon or citric acid, sumac, dried mint and salt. Mix well. Taste and adjust salt as needed.
Taste the veggie mix and adjust to your liking. It should taste tangy since that sourness will decrease once they are baked.
Drain the water from the veggies.
Spread the veggies onto your round prepared dough. Bake 450℉ for 11-13 minutes or until golden brown.
Broil on high for 1 minute if needed.
Notes
Check out these tips.#1: Use leftover veggie mix as a dipping salsa for chips, crackers, or other mini-pies. Or, put into a larger zaatar or cheese pie and roll it into a sandwich. You can also spread it on pita bread and bake it as well. Yum!!#2: You can keep use the open-face version but add a crust by fringing the sides over the edges of the veggie mix.#3: Veggie pizza pies last for two days at room temperature in mild weather, up to a week in a container in the fridge.#4: Do not freeze because the veggie mixture will become soggy and go bad.#5: You can prepare a double or a triple batch to please a larger crowd.