As a seasoned French pastry chef with years of experience recreating regional classics, I can confirm that Tarte Tatin ranks among France's most iconic desserts. Legend has it this upside-down apple tart was born from an accidental kitchen mishap by the Tatin sisters in their Sologne restaurant late in the 19th century—not Normandy, as some believe.
In Normandy's apple-and-caramel heartland, though, the concept has thrived. Here's my trusted, old-fashioned Norman version, refined through countless bakes for caramel perfection and flaky crust.
This tarte demands precision and a bit of patience: homemade dough rests for an hour, yielding superior results. You'll need a mixing bowl, rolling pin, and a deep pie dish (or skillet for caramelizing). Ingredients for 6-8 servings: 1 kg apples (Canada variety ideal), 150 g flour, 150 g butter, 250 g sugar, 1 egg, pinch of salt.
In a bowl, combine flour, 100 g sugar, and salt. Make a well, add 75 g diced soft butter and 1 egg yolk. Mix until crumbly, then incorporate water gradually for a smooth dough. Wrap and chill for 1 hour. Meanwhile, melt remaining butter with some sugar in your pie dish over low heat.
Peel and quarter the apples. Layer them in the buttery dish, sprinkle with remaining sugar. Cook on stovetop or in oven at moderate heat for 10-15 minutes, stirring occasionally until half-cooked and lightly caramelized. (A springform pan or buttered skillet works too.) Set aside.

Preheat oven to 180°C (thermostat 6). Roll out rested dough on a floured surface into a disc 3 cm larger than your dish. Drape over apples, tuck edges in, and slash a few vents. Bake 40 minutes until golden. Cool 10 minutes, then invert onto a serving plate by placing a dish atop and flipping. Lift off mold carefully.
Elevate slices with a quick caramel sauce: melt 125 g butter and 150 g sugar (no brown sugar) in a bain-marie, stir in 3 drops vanilla extract and a splash of Calvados if desired. Canada apples hold shape best, releasing minimal water to keep caramel rich. Pair with Isigny cream and Normandy cider. Bon appétit!