Prepare the Crust:
In a large bowl, combine the flour, baking powder, and a pinch of salt.
Add the cold butter cubes and use your fingers or a pastry cutter to rub the butter into the flour until the mixture resembles coarse crumbs.
Stir in the egg, sugar, and sour cream. Mix until the dough comes together.
Form the dough into a ball, cover it with plastic wrap, and refrigerate for 10-15 minutes.
Prepare the Filling:
In a medium bowl, whisk together the eggs, vanilla sugar, regular sugar, and cornstarch until smooth.
Add the sour cream and whisk until the mixture is fully combined and smooth.
Assemble the Tart:
Preheat the oven to 180°C (356°F).
Roll out the chilled dough and press it into the bottom and sides of a 22 cm (9-inch) tart pan. Trim any excess dough from the edges.
Arrange the apple slices in a circular pattern on the dough.
Pour the sour cream mixture over the apples, spreading it evenly.
Optional Garnish:
If using almond flakes, sprinkle them over the top of the tart for extra crunch.
Bake the Tart:
Bake in the preheated oven for 50 minutes, or until the filling is set and the crust is golden brown.
Remove from the oven and let the tart cool slightly.
Final Touch:
Dust with powdered sugar before serving for an elegant finish.
Serving Suggestions:
Serve the tart warm with a scoop of vanilla ice cream or a dollop of whipped cream.
Pair with a cup of coffee or tea for an afternoon treat.
Cooking Tips:
Make sure the butter is cold when incorporating it into the dough to achieve a flaky, crisp crust.
To prevent the apples from browning while you prepare the filling, you can toss them in a little lemon juice.
You can use any type of firm apple, such as Granny Smith, Fuji, or Honeycrisp.
Nutritional Benefits:
Apples provide a good source of fiber and vitamin C.
Sour cream adds a creamy richness without overwhelming the dish.
Almond flakes (if used) provide a boost of healthy fats and a delightful crunch.
Dietary Information:
This tart contains dairy and gluten, but you can substitute with gluten-free flour and plant-based sour cream for alternative versions.
Storage Information:
Room Temperature: This tart can be stored at room temperature for up to 1 day, covered.
Refrigerator: Store in an airtight container in the refrigerator for up to 3 days.
Freezing: You can freeze the baked tart for up to 1 month. Thaw in the refrigerator overnight and reheat gently before serving.
Conclusion
This Apple Sour Cream Tart is a delightful combination of sweet apples and creamy sour cream filling encased in a buttery, crumbly crust. The tart’s subtle sweetness makes it a perfect dessert for any occasion, and it’s easy enough to prepare for a family gathering or a cozy weekend treat.