Mix yeast, sugar, and warm water in a bowl.
Let sit for 5–10 minutes until frothy.
Add flour, butter, garlic powder, and salt.
Stir until combined.
Knead for 6-8 minutes until dough is soft and slightly sticky.
Let rise in a greased bowl for 1 hour.
Preheat oven to 450°F (232°C).
Punch down dough and roll into a 10x15-inch rectangle.
Transfer to a parchment-lined baking sheet, poke dimples in the dough, and brush with butter.
Bake for 17-20 minutes until golden and let it cool.
Mix cream cheese and yogurt until smooth, then stir in dill, garlic powder, onion powder, salt, and pepper.
Spread over the cooled crust.
Press chopped vegetables into the cream cheese, sprinkle with parmesan and garnishes.
Slice and serve immediately or refrigerate.