Preheat your oven to 350°F (175°C) and grease a 9-inch baking pan to prepare for baking.
In a large mixing bowl, whisk together the sifted flour, sugar, cinnamon, ginger, baking powder, and salt until evenly combined.
In a separate bowl, whisk the eggs, melted butter, and vanilla extract until smooth and slightly frothy.
Pour the wet mixture into the dry ingredients and fold gently with a spatula until just combined, avoiding overmixing.
Fold in the sliced apples into the batter, distributing them evenly throughout the mixture.
Pour the batter into the prepared baking pan and smooth the top with a spatula for even baking.
Bake in the preheated oven for about 40 minutes, or until the top is golden brown and a toothpick inserted in the center comes out clean.
Remove the cake from the oven and let it cool in the pan for about 15 minutes. Then transfer it to a wire rack to cool completely.
Slice the cooled cake and serve it warm or at room temperature, enjoying the tender crumb and aromatic apple slices.