Heat the oven to 400F/200C/Gas Mark 6-7. Place the half avocado on a lightly greased ovenproof dish and sprinkle the cut surface with lemon juice to stop browning.
Grate the cheese into a small basin, wash the chives and scissor snip them into the grated cheese, or wash and trim the spring onion (trim off the roots and yellow leaves, but retain as much of the green as looks appetising) and chop or snip the onion into the cheese.
Wash and scissor snip the parsley into the cheese mixture. Add the pine kernels or chopped nuts and sweetcorn, and mix together with wine or cider. Season with salt, pepper, and a little lemon juice to taste.
Pile the mixture into the avocado (it will heap up on top of the pear). Bake in the hot oven for 10-15 minutes until golden brown and bubbling. Serve with crispy bread rolls or hot garlic bread.