Lois’ zucchini frittata is the perfect thing to take on a summer picnic; it’s pretty good for midweek ‘picnics’ at your desk, too. Frittata is best eaten at room temperature or cold, with a dollop of good chutney on the side.

Zucchini frittata (Lois Daish, Good Food, p. 14)

2 medium onions, sliced

4 zucchini

4 tablespoons oil and/or butter

6 free-range eggs

50g freshly grated parmesan

handful of parsley or basil, chopped

sea salt & freshly ground black pepper

Slice the onions thinly and cook in 2 tablespoons of oil until golden in a large frying pan with a heatproof handle. Meanwhile top and tail and zucchini and slice into thin rounds. Add the zucchini to the pan and stir to coat in oil. Cook for a further 5 minutes. Season with salt and pepper and take off the heat.

Crack the eggs into a large bowl and beat until combined. Add the parmesan, herbs and zucchini mixture and stir. Preheat the grill of your oven. Heat the remaining 2 tablespoons of oil/butter in the frying pan and pour in the frittata mixture and give the pan a shake to evenly distribute the contents. Cook over a low heat for about 5-10 minutes until you can see the sides of the frittata beginning to set. Place under a hot grill until the top is golden brown.