• Preheat Oven: Preheat oven to 180°C (350 °F). Spray a 20 cm (8-inch) round cake pan with non-stick cooking spray and line the bottom with parchment paper.
• Cream Butter and Sugar: In the processor, add the butter, sugar, and orange zest. Process for 45 seconds until the mixture is light and fluffy
• Prepare Dry Ingredients: In a food processor, combine the flour, walnuts, baking powder, baking soda, and salt. Process for 1 minute and 30 seconds until finely ground. Transfer the mixture to a bowl.
• Add Eggs: Add both eggs to the butter mixture. Process for a few seconds until smooth, scraping down the sides of the processor to ensure everything is well mixed.
• Combine Wet and Dry Ingredients: Add the ground flour mixture to the processor, and process for process for another 10 seconds until combined. Transfer the batter into the prepared pan and spread it evenly.
• Bake: Bake in the middle rack of the oven for 30-35 minutes, or until a toothpick inserted into the center comes out clean.
• Cool and Serve: Place the pan on a wire rack to cool. This cake is fantastic when warm, so feel free to enjoy a slice soon after it comes out of the oven.

This Orange Walnut Cake is perfect on its own, but if you want to take it up a notch, serve it with a dollop of whipped cream or a scoop of vanilla ice cream. It pairs beautifully with a hot cup of tea or coffee, making it an excellent choice for afternoon tea or as a delightful dessert.