Going on a picnic?
For a picnic, cool the frittatas,
then return to the tin for easy
transportation, or stack in containers
layered with baking parchment.
Heat oven to 180C/160C fan/gas 4.
Grease a 12-hole muffin tin and line
each hole with a slice of prosciutto to
cover the base and sides. Heat oil in a
small frying pan and cook onion for
5 mins, until soft. Meanwhile, snap the
tip ends off the asparagus and set aside.
Finely slice the stalks and add to the onions when soft. Cook for 2-3 mins
more, then remove and cool.
Beat the eggs, milk and ¾ of the
Parmesan together. Add some onion
mix to each muffin hole. Divide over
the egg mix, then top with the asparagus
tip ends. Sprinkle over the remaining
Parmesan and cook for 18-20 mins or
Allow to cool for a few mins then
remove from tin and eat warm or