Peel and chop the potatoes into ½ inch dice. Cut the leek in half lengthwise, then slice it thinly.
Warm up the olive oil in a large skillet, add potatoes and leek, and cook them on medium heat for 5 minutes.Season with salt, blackpepper, turmeric, cumin, and water.Stir, cover with a lid, and cook on medium-low heat for 10 minutes or until the potatoes are fork tender.Stir occasionally and add more water if necessary. Taste and adjust for salt.
MAKE FRITTATA BATTER
In the meantime, add chickpeaflour, oliveoil, water, salt, blackpepper, and optionally KalaNamak to a mixing bowl.Blend with an immersion blender until smooth. You can also use a regular blender.
Transfer potato-leek mixture into chickpea batter. Stir gently to combine.
BAKE
Preheat oven to 400°F or 200°C. Line baking pan with parchment paper. Let paper fold over the edges.Pour batter into pan. Distribute potatoes and leek with a fork.
Bake at 400°F or 200°C for 16 minutes. The potato frittata should be dry on top and soft and moist in the center.
Let cool down 10 minutes, then slice and serve right from the pan, or take it out pulling the parchment paper. You can sprinkle with chopped parsley.
Nutrition information is an estimate for 1 small square of potato frittata out of 16 squares.SUBSTITUTIONSPotatoes: substitute zucchini, asparagus, artichoke hearts, mushrooms, butternut squash, pumpkin, cauliflower, peas, carrots, and spinach for the potatoes.Leek: substitute red onion, shallots, and white onion for the leek.VARIATIONSWith the same ingredients you can make a stove-top vegan frittata, chickpea frittata muffins, and Italian farinata.STORAGEMake Ahead: this is an excellent recipe to make ahead as it keeps well in the refrigerator for 3 to 4 days.Refrigerator: let the frittata cool down completely, then store it in an airtight container in the fridge for up to 4 days.Freezer: let cool down completely, then transfer into a freezer-friendly bag, separating the pieces of frittata with parchment paper to prevent them from sticking together. Freeze for up to 3 months.Thaw: defrost frozen frittata in the refrigerator over several hours or at room temperature for half an hour.Reheat: reheat in the microwave for 1 to 2 minutes.