Preheat the oven to 350 degrees. Spray a nine-inch springform pan with baking spray. Line the bottom of the pan with parchment paper. Spray again.
In the bowl of an electric mixer, with the paddle attachment, beat the eggs until foamy. Add the sugars and beat until light and thick.
In a small bowl, stir together the tea and honey, and then add it to the mixing bowl. Add the butter and mix until combined.
In a third bowl, sift together the flour, salt, baking powder, and baking soda. Add this to the mixing bowl and mix until just combined. Then add the vanilla.
Bake the cake for 30 minutes, or until a toothpick inserted in the center of the cake comes out clean. Remove the sides right away. Let it cool on a rack for ten minutes, and then using a spatula, remove the bottom of the pan. Let it cool for another 50 minutes, remove the parchment paper, and then serve plain or with toppings.
For the Cream Cheese Frosting: In a mixing bowl, beat together the cream cheese, vanilla, and butter. Then, sift in the cream cheese, and whip until blended.
Spread frosting all over the top of the cake, and sprinkle the walnuts all over.