Halve or quarter the turnips, depending on size, and slice 1/4" thick. Halve the apples and slice 1/4" thick. Slice the onion 1/4" thick.
Heat the sunflower oil in a large pan on low-medium heat.
Add the onions, turnips, curry powder, and salt and saute until the onions turn translucent.
Add apples and turnips. Saute for a few more minutes.
Add stock and bring to a boil.
Turn the heat down to a simmer and cook for 10 Minutes or until the stock has evaporated.