Preheat the oven to <temperature>180<unit>°C</unit></temperature>

Add <quantity>3<unit>tbsp</unit></quantity> of room temperature butter and <quantity>1<unit>cup</unit></quantity> of caster sugar to a bowl

Whip with a hand mixer until you get a pale cream

Add <quantity>2</quantity> eggs, whipping after each addition, until incorporated and curdled

Add <quantity>1<unit>tsp</unit></quantity> of vanilla extract and <quantity>1<unit>tbsp</unit></quantity> of apple juice and mix to combine. Set aside

Peel <quantity>2</quantity> apples

Remove the core and dice them

Transfer to a container and add <quantity>1<unit>tbsp</unit></quantity> of all-purpose flour. Toss to coat the apples

Add <quantity>2<unit>cups</unit></quantity> of all-purpose flour, <quantity>1<unit>tsp</unit></quantity> of baking powder and a pinch of salt to the reserved batter

Mix until everything is well incorporated

Add the apples to the batter and mix to incorporate

Line a springform cake pan with parchment paper, add the batter, and spread it

Sprinkle caster sugar on top

Bake for about 40m until golden brown

Let the tart cool and unmold it. Sprinkle powdered sugar on top. The apple tart is ready

Pair it with a cup of coffee and enjoy!