Step 1. Preheat the oven to 350 degrees.
Step 2. Prep the 9-inch springform pan by lining it with parchment paper, crumpling it, and coating the sides with 2 tablespoons of olive oil or melted unsalted butter. Set the pan aside.
Step 3. Into a medium mixing bowl, add the dry ingredients: 2 cups Bob's Red Mill Organic all-purpose flour (sifted), ⅓ cup almond flour Bob's Red Mill (sifted), 2 teaspoons baking powder , 3/4 teaspoon baking soda and ½ teaspoon sea salt Use a whisk or a fork to combine the ingredients thoroughly. Set the bowl aside.
Step 4. Next, into a small bowl, add: 1 1/2 tbsps Grand Marnier, 1 1/2 tbsp amaretto, 4 tbsps freshly squeezed lemon juice, roughly the juice of two ripe lemons and 1 tablespoon of pure vanilla extract
Step 5. In a stand mixer fitted with the paddle attachment, add 1 cup of granulated sugar, 3 fresh eggs, and 1 tbsp of grated lemon zest, and beat on medium speed until well incorporated. With the mixer still running, slowly add the 1 1/4 cups of extra-virgin olive oil, beating until incorporated.
Step 6. In batches, alternate adding the dry ingredients and the wet ingredient mixture into the stand mixer, beginning and ending with the dry ingredients.
Step 7. With the stand mixer set to low to medium speed, add half of the dry ingredients, then half of the wet ingredients, followed by 1/4 cup of whole milk. Repeat with the remaining dry ingredients, wet ingredients, and the remaining 1/4 cup of whole milk. Mix just until combined, being careful not to overmix the batter.
Step 8. Pour the cake batter into the prepared springform pan, and sprinkle the top with 2 tablespoons of granulated or superfine sugar, then place it on the middle rack of the preheated oven.
Step 9. Bake until golden brown (approx 45-55 minutes), and a toothpick or cake tester inserted into the middle comes out clean.
Step 10. Remove the cake from the oven and allow it to cool in the springform pan for 10-15 minutes.
Step 11. Run a sharp paring knife along the sides of the cake, and release the spring, then transfer the cake onto a cake holder or larger flat platter.