Heat a large frying pan over medium heat and add a small knob of butter.
Add the mushrooms and cherry tomatoes and cook for 5–7 minutes, turning occasionally, until the mushrooms are golden and the tomatoes are soft and lightly blistered.
Remove from the pan and set aside.
In a bowl, whisk the eggs with the cream until smooth and well combined.
Wipe out the pan and return it to medium heat. Add the remaining butter and allow it to melt. Pour in the egg mixture, swirling the pan to coat the base evenly.
As the eggs begin to set, gently draw the edges towards the center to create soft folds. Reduce the heat to low and allow the base to cook through while the top remains slightly soft.