1.Preheat the oven to 170°C (150°C fan-forced). Grease a 12-hole silicone mini muffin pan.
2.Combine eggs, milk, cheese and ham in medium jug. Season.
3.Spoon mixture into muffin holes. Top with cherry tomatoes (rounded or cut-side up). Bake 20 minutes, or until just set. Stand 5 minutes before turning onto a wire rack to cool.
We used silicone muffin pans for this recipe because the fritattas won’t stick to them as they do with regular pans. The pans are available from selected supermarkets and kitchenware shops. If using regular mini muffin pans, line them with paper cases before filling. Mini frittatas can be stored in the fridge for up to two days. You can seal in an airtight container and freeze for up to one month. Thaw frittatas at room temperature or place frozen in school lunchbox.