Preheat the oven to 180°C

Use a rolling pin to lightly roll slices of bread and flatten until thin. Butter the slices of bread on one slide. Place the slices in a muffin tin, butter side down in order to create a case. Transfer into the oven and bake for 8 minutes. Remove the tin from the oven and reduce the temperature to 160°C

Meanwhile, place the cheese, ham, spring onions and eggs in a large bowl. Season with salt and pepper and mix well to combine

Pour the mixture carefully into the toasted cases, and return to the oven to bake for a further 15-20 minutes or until set and lightly golden. Remove from the oven and allow to stand for 5 minutes, before carefully removing from the tin

Serve warm or at room temperature