Preheat the oven to 180°C, fan 160°C, gas 4. Put the asparagus and broad beans in a pan of boiling water and cook for 2 minutes. Drain and run under cold water. Pop the broad beans out of their skins (or you can leave them whole) then set the veg aside.
Put the eggs in a bowl and whisk in the crème fraîche and milk. Stir in the hard cheese and Cheshire cheese along with the asparagus, broad beans and mint.
Grease a 16cm x 26cm baking tin and line with baking parchment. Pour the mixture into the tin and bake for 25-30 minutes, until light golden and set.
About 5 minutes before the end of the cooking time, put the ciabatta on a tray in the oven to warm through. Slice and serve with wedges of quiche, and salad with a drizzle of balsamic glaze over the top.
Cook's tip: make mini baked egg quiches for a picnic. Pour the mixture into a greased 12-hole muffin tin and bake for 15 minutes.