Directions:

Preheat the oven to 450 degrees F

Lightly flour a clean and dry work surface and place the dough in the center, sprinkling a little flour on top. Press down into the dough with your fingertips to flatten, then stretch it out into a smooth and oblong flat shape, making sure not to pull so hard as to create holes.

Place the flattened dough on the floured work surface and, using a thin rolling pin, roll it out until it is smooth and about 9 to 12 inches long and 1/2 inch thick. Be sure to release any small air pockets in the dough and make sure it is smooth with no holes.

Lightly grease the bottom of a 13 x 18 sheet pan with 1 tablespoon of the olive oil. Carefully transfer the rolled-out dough onto the sheet pan and spread it out evenly using your fingers, then smooth the dough by gently pressing down using the palms of your hands.

Brush the dough with 2 tablespoons of the olive oil and spread half of the garlic paste over the oil. Layer the onions, olives, and tomatoes evenly onto the dough, starting in the center and working your way around to the edges until the whole dough pie is covered with the ingredients. Crumble the feta cheese all over the vegetables and sprinkle the fresh herbs on top.

Place the sheet pan on to the center rack of the preheated oven and bake for approximately 20 to 25 minutes until the tomatoes are blistered, and the flat bread is lightly golden brown. The edges should be crispy, and the pie will be very aromatic. Immediately remove from the oven and lightly brush the edges with 1/2 tablespoon of the olive oil.

In a large mixing bowl combine the arugula and spinach, the remaining garlic paste and the remaining olive oil, lemon juice and salt, and lightly toss together. Spread the arugula and spinach mixture all over the top of the flatbread.

Slice and serve hot, warm or at room temperature.