SPINACH, LEEK, AND CHEESE PIE

Steps:

• 1. Heat the oil in a large skillet over medium-low heat. Add the onion and a pinch of salt. Cover and simmer, stirring occasionally, 6 minutes. Add the leek, season with more salt and the pepper, and continue to cook, stirring occasionally, until the vegetables are very soft and translucent, about 8 minutes. Transfer to a bowl and set in an ice bath to cool.
• 2. Meanwhile, preheat oven to 325°F.
• 3. Generously coat an 8-inch round nonstick springform pan with butter and chill.
• 4. Sift together the flour and baking powder in a medium bowl; set aside.
• 5. Combine the yogurt, feta, onion-and-leek mixture, spinach, and dill in a large bowl. Add the eggs and stir to combine. Using a rubber spatula, gently stir in the flour mixture and season with more salt and pepper. Pour into the prepared pan, gently tapping the sides to level the top.
• 6. Bake for 30 minutes. Increase heat to 425°F and bake until golden brown and set in the center, about 10 minutes more.
• 7. Transfer to a wire rack and cool for 10 minutes before unmolding.
• 8. Cut into wedges and serve.