75 grams (1/3 cup) milk (any percentage or non-dairy)
2 teaspoons vanilla extract
1 tablespoon orange zest (optional)
100 grams (1 cup) chopped toasted pecans or walnuts (optional)
Instructions
Prep: Position an oven rack to the center position. Preheat the oven to 350°F/175°C. Butter or grease an 8-inch (20 cm) square or round baking pan and set aside.
Make the Topping: In a mixing bowl combine all of the ingredients for the topping and stir together until crumbly. Set aside.
Mix Dry Ingredients: In a large mixing bowl combine the flour, sugar, baking powder, salt, and apple pie spice and whisk until well combined.
Grate Apples: Use a box grater or a food processor to grate the apples. You can leave the peels on.
Mix Wet Ingredients: Add the grated apples to a separate mixing bowl and add the eggs, oil or melted butter, milk, vanilla, and orange zest (if using), and stir until combined.
Combine the wet ingredients with the dry ingredients and use a silicone spatula to stir until combined. If you are using the nuts, fold them in here.
Pan: Pour the batter into the prepared pan and top with the streusel topping.
Bake at 350°F/175°C for 50-60 minutes until a tester comes out clean.
Store uneaten cake at room temperature covered in foil for up to 3 days.
Notes
You can make homemade apple pie spice if you do not have any on hand or substitute with 1 teaspoon cinnamon, and 1/4 teaspoon each of allspice, nutmeg, cardamom, and ground ginger.