1. Prepare the Crust:
– Combine flour, salt, and sugar in a food processor until well blended.
– Add small pieces of cold unsalted butter and pulse until the mixture resembles coarse meal.
– Gradually add cold water (and egg yolk if desired), pulsing until the dough forms.
– Wrap the dough in plastic and refrigerate for 30 minutes to an hour.

2. Prepare the Apple Filling:
– Peel, core, and slice apples into 1/8-inch thick pieces.
– Toss apple slices with sugar, cinnamon, melted butter, and salt. Add vanilla extract and lemon juice if desired.

3. Roll Out the Dough:
– On a lightly floured surface, roll the dough into a circle large enough to line your tart pan.
– Gently lay the rolled dough into a tart pan or create a rustic free-form shape.

4. Assemble the Tart:
– If using apple compote, spread it over the crust base.
– Arrange apple slices in overlapping concentric circles or a decorative pattern directly in the crust.

5. Bake the Tart:
– Preheat your oven to 350°F to 400°F.
– Bake at the higher temperature for 15-20 minutes, then reduce and bake for an additional 20-40 minutes until the crust is golden and apples are tender.

6. Add the Glaze:
– Brush the baked tart with warm apricot jam for a glossy finish.

7. Serve:
– Serve warm with vanilla ice cream, whipped cream, or lightly spiced crème fraîche for added richness and delight.