Lipstick Peppers & Watercress

6-8 lipstick or gypsy sweet peppers
1 medium/small red spring onion (or shallots would do, etc)
1 bunch watercress, cleaned thoroughly
olive oil, salt, pepper

Heat the oil at medium heat, add the diced onions when hot. When beginning to sweat, add the peppers in ring slices. Remove the seeds beforehand. When softened but not greying, add the watercress, turn off the heat, cover. Serve when wilted. Toss well. Add some lemon juice or zest if you feel up to it.