In a large bowl, toss the sliced apples with lemon juice. This helps prevent browning and adds a bit of tartness.
2. Make the Caramel Sauce:
In a saucepan, melt the butter over medium heat. Stir in the sugar until it’s fully dissolved and the mixture starts to caramelize. Be careful not to burn it. Cook for about 3-5 minutes, stirring constantly.
3. Prepare the Topping:
Add the sliced apples to the caramel sauce and mix until the apples are well coated. Stir in the chopped walnuts. Set aside to cool slightly.
4. Prepare the Dough:
Preheat your oven to 180°C (356°F).
In a mixing bowl, cream together the softened butter and sugar until light and fluffy. Add the eggs, one at a time, beating well after each addition.
In a separate bowl, sift together the flour, baking powder, and salt. Gradually add the dry ingredients to the butter mixture, mixing until just combined.
Roll out the dough on a floured surface and transfer it to a 26 cm (10-inch) pie pan. Press it into the bottom and sides of the pan. Trim any excess dough.
Spoon the apple and caramel mixture into the prepared crust, spreading it evenly.
See alsoCarrot Apple Oat Cake
6. Bake:
Bake in the preheated oven for 40 minutes, or until the crust is golden brown and the filling is bubbly. Check the pie halfway through baking; if the edges are browning too quickly, cover them with foil.
7. Cool and Serve:
Allow the pie to cool slightly before serving. This will help the filling set and make it easier to slice. Serve warm or at room temperature, with a scoop of vanilla ice cream or a dollop of whipped cream if desired.