Zucchini Slice - Gluten Free

I got in a couple of kilos of Zucchinis today because they are cheap at the moment!!

Alan and I have a standing joke that everytime we get Zucchinis in that we make Zucchini and Rosemary soup! So after the giggles died down (and we laugh at it everytime) I wanted to make Zucchini Slice.

Do you remember eating this cold as a kid? I do, and I do remember it being around Spring/Summer that it