Prep your pan and oven. Heat oven to 350°F (175°C).
Grease a 9-inch round cake pan and line the bottom with parchment for easy release.
Grate or chop the apples. Core the apples (no need to peel unless you prefer) and grate on the large holes of a box grater, or chop finely. You want about 2 cups. If very juicy, lightly pat with a paper towel—don’t squeeze them dry.
Mix the wet ingredients. In a large bowl, whisk together maple syrup, applesauce, oil, vanilla, and vinegar until smooth.
Combine the dry ingredients. In a separate bowl, whisk whole-wheat pastry flour, almond flour, baking powder, baking soda, salt, cinnamon, and nutmeg to break up any clumps.
Bring it together. Add dry ingredients to the wet and stir gently until just combined.
Fold in the apples, nuts, dried fruit, and lemon zest if using. The batter will be thick; that’s normal.
Fill the pan. Spoon the batter into the prepared pan and smooth the top. If you like, sprinkle a few chopped nuts on top for texture.
Bake. Bake for 35–45 minutes, or until the top is golden and a toothpick comes out mostly clean with a few moist crumbs (not wet batter).
Cool. Let the cake rest in the pan for 10 minutes, then transfer to a wire rack to cool completely.
This helps it set and stay moist.
Serve. Enjoy plain, with a dusting of cinnamon, or a dollop of coconut yogurt. For a gentle glaze, whisk 2–3 tablespoons maple syrup with 1 tablespoon tahini and drizzle over the cooled cake.