Preparation: Start by preheating your oven to 350°F. Take a 9-inch round cake pan and lightly grease it to ensure your cake doesn’t stick.
Wet Mix: In a mixing bowl, whisk together the eggs and oil. As you whisk, incorporate the cinnamon, granulated sugar, brown sugar, and vanilla extract until you achieve a smooth blend.
Dry Mix: Introduce the flour, followed by the salt, baking soda, and baking powder. Mix gently but ensure there are no dry pockets.
Fold in the Goodies: Delicately fold in the chopped apples and walnuts, ensuring they’re distributed evenly throughout the batter.
Baking: Pour the batter into your greased pan, spreading it out evenly. Bake in the preheated oven until a tester or toothpick inserted into the middle emerges clean, which should take around 45 minutes.
Cool & Serve: Once baked to perfection, allow your cake to cool for about 15 minutes. Slice it into wedges and serve it up! Relish the beautiful marriage of apple and cinnamon in every bite.