Preheat your oven to 350°F (175°C). Grease a 9-inch round cake pan with non-stick spray or butter.

In a large bowl, toss the sliced apples with lemon juice and set aside.

In another bowl, mix the chopped pecans, melted butter, brown sugar, cinnamon, and salt until well combined. Spread this mixture evenly on the bottom of the prepared cake pan.

Layer the sliced apples over the pecan mixture in the pan, arranging them evenly.

In a separate bowl, whisk together the flour, baking powder, and granulated sugar.

In another bowl, beat the eggs and then add the vanilla extract. Combine the wet ingredients with the dry ingredients and stir until just mixed.

Pour the batter over the apples and pecans in the pan, spreading it evenly.

Bake in the preheated oven for 40-45 minutes, or until a toothpick inserted into the center comes out clean.

Allow the pie to cool in the pan for 10 minutes, then invert it onto a serving plate. Let it cool slightly before serving.