Main
1-Wash the zucchini thoroughly and slice them: Wash the zucchini thoroughly and slice them into thin rounds about 5 millimeters thick.
2-In a non-stick pan, heat 1 tablespoon: In a non-stick pan, heat 1 tablespoon of extra virgin olive oil and cook the zucchini with a pinch of salt and pepper for about 5 minutes, until they start to soften slightly.
3-Peel the potato and cut it into: Peel the potato and cut it into small cubes about 1 centimeter per side, to promote even cooking.
4-Finely chop the onion and sauté it: Finely chop the onion and sauté it in a pan with the second tablespoon of extra virgin olive oil over low heat until lightly golden.
5-Preheat the oven to 180 degrees Celsius: Preheat the oven to 180 degrees Celsius in static mode. Lightly grease a rectangular pan about 24 × 18 centimeters, or line it with parchment paper.
6-In a large bowl, beat the eggs: In a large bowl, beat the eggs with the sugar and a pinch of black pepper. Add the milk and mix vigorously.
7-Sift the flour with the baking powder,: Sift the flour with the baking powder, then incorporate it little by little into the liquid mixture, mixing with a hand whisk until a smooth and fluid batter is obtained.
8-Arrange half of the cooked zucchini on: Arrange half of the cooked zucchini on the bottom of the pan. Spread the raw potato cubes and the golden onion evenly.
9-Using a spoon, distribute the spreadable cheese: Using a spoon, distribute the spreadable cheese in small dollops over the entire surface.
10-Cover the vegetables with the liquid batter,: Cover the vegetables with the liquid batter, spreading it evenly over the entire surface of the pan.
11-Arrange the remaining zucchini on the surface,: Arrange the remaining zucchini on the surface, in an orderly or decorative manner, and finally sprinkle with the grated Parmigiano Reggiano.
12-Bake the tart and cook for 40-45: Bake the tart and cook for 40-45 minutes, until a golden surface and compact consistency are obtained. Check doneness by inserting a toothpick: it should come out dry.
13-Remove from the oven and let it: Remove from the oven and let it cool for at least 10 minutes before slicing into pieces and serving. This step allows the structure to stabilize and improves the cut.