In the meantime, grease a cupcake tray with soft butter. In a large bowl, beat the eggs with the salt and pepper and the dried mint. Slice the courgette into very thin rounds (I use a mandolin). Roughly chop the sundried tomatoes and add to the eggs. Divide the egg mixture between the cupcake holes (do this in batches depending on how many holes your tray has). Top with the courgette rounds, followed by the feta and the cooked cherry tomato halves. Add a few salad or sage leaves to the top. Bake in the oven for 15 minutes then remove and leave to cool on a wire rack.