I searched at several groceries for lemon marmalade with no luck. So, I went with what was available, orange. With that, I swapped orange zest for the lemon as well. I baked in a 9 inch cake pan, with the intent to layer. However, I got lazy once it was out of the oven. Smothered in strained marmalade, whipped up some white chocolate whipped cream and tossed some of the orange zest that was strained on top. I loved it. Especially on day 2. I would definiately make a day in advance from now on. Its so much better after a good sit. I will make this again. I think my Gram would love it. So maybe for the next time I see her. And I will keep a look out for lemon marmalade too. Id like to give the original recipe a shot. I adore lemon.