Preheat oven to 350˚F (175˚C). Grease two large baking sheets with oil or line with parchment.
In a large skillet, drizzle olive oil over medium heat.
Add the ground meat and cook, stirring often and breaking up the lumps, until browned.
Mix in the onion, garlic, black pepper, and salt. Cook, stirring occasionally, until the onions have softened, about 8 minutes.
Mix in the spring onions and tomato, then remove from heat.
In a small bowl, whisk together the tahini, lemon juice, and water. Stir into the meat topping.
Divide the meat topping into 6 equal piles.
On a very lightly floured surface, divide the dough into 6 equal pieces.
Form one piece into a ball, then roll into a circle about 1/8 inch (3 millimeters) thick. Pinch up the edges of the circle to for a raised, fluted edge. Place on prepared baking sheet and repeat with remaining dough.
Cover each circle of dough with the topping, up to the raised edges. Sprinkle the tops with poppy seeds and brush the edges of the crust with olive oil.
Bake in preheated oven until golden, about 30 minutes.
Serve immediately.