1. Bring a pan of water to the boil, drop in the whole chillies and blanch for about 2 minutes. Drain and dry the chillies thoroughly. Make a slit down one side and carefully remove the seeds.
2. Mix together the cream cheese, garlic, Cheddar and spring onion and season with salt and pepper. Fill each chilli with the cheese mixture.
3. Mix the flour and cornmeal in a shallow bowl and place the beaten egg in another. Dip the chillies first in the egg, then in the flour mixture. Place on a plate in the freezer to firm up, about 1520 minutes.
4. Heat enough oil in a frying pan to come 3cm up the side. Fry the chillies about 34 minutes each side, turning carefully so as not to disturb the filling, or until golden and the filling is melted and heated through.
Serve with Pico de Gallo salsa.