Coffee and Walnut Sponge Cake

We had a shared lunch at church today so I thought I would make a coffee and walnut sponge cake. Part of my reason for doing this was because I thought it would be more popular at church than it would be at home! Coffee and nuts are not the kids favourites!
I started making it early yesterday morning, as we were going out for the day. As I spread the mix between the two sandwich tins, I thought to myself that there didn't seem to be much mix. I presumed it would rise, confident that I had measured everything carefully.
Unfortunately I had used the wrong size tins. Mine are 8 inch tins, and the recipe requires 7 inch tins. I ended up with two thin sponges!
I decided that they should not go to waste as, although the edges were a bit dry, the middle was fine, so I cut out some circles, and hey presto, here is the finished result - 5 mini coffee and walnut cakes. Unfortunately I realised that these would not go very far at church, so having all the ingredients, I decided to bake.......