Method
Peel and grate the carrot. Finely chop the leeks as thin as possible to ensure they cook through perfectly.
In a large mixing bowl, whisk the eggs, yogurt, and vegetable oil until smooth.
Stir in the cornmeal and all-purpose flour. Add the baking powder, salt, black pepper, and paprika. Mix until a thick, smooth batter forms.
Fold in the grated carrots, finely chopped leeks, and crumbled cheese. Mix well with a spatula until the vegetables are evenly coated.
Pour the mixture into a greased baking dish (about 10-11 inches / 26-28 cm). Smooth the top with a spatula.
Sprinkle generously with nigella seeds (or sesame seeds if you prefer).
Place in a preheated oven at 180°C (350°F) . Bake for 35-40 minutes until the top is golden brown and a toothpick comes out clean.
Let it rest for 5-10 minutes before slicing. Enjoy warm or at room temperature!
Notes
If the leeks release too much moisture, lightly sauté them for 3–4 minutes before mixing into the batter. This prevents the börek from becoming too soft or soggy while baking.