For the dough

• 1 cup warm water
• 2 ¼ teaspoons instant dry yeast
• 1 teaspoon granulated sugar
• 2 ¼ cups (300 g) all-purpose flour
• 1 teaspoon sea salt or Kosher salt
• 3 tablespoons olive oil, divided + more for drizzling

For the topping

• 2 tablespoons olive oil, divided
• 1 medium onion, finely chopped
• 4 cloves garlic, minced
• 8 ounces cremini or white button mushrooms
• 1 large red bell pepper, de-seeded, quartered and thinly sliced
• 5 oz spinach leaves, washed and pat dried
• ¾ cup (7 ounces) feta cheese, crumbled
• 1 teaspoon aleppo pepper
• Salt and freshly ground black pepper, to taste

For the egg wash

• 1 beaten egg
• 1 tablespoon olive oil to brush the pide