Preheat the oven to 170 °C (convection oven).
Preheat the oven to 170 °C (convection oven).
Sauté the parsnips, onions and apples in the butter. Deglaze with the white wine and add the vegetable stock. Simmer until soft and reduce until the liquid has been evaporated.
Remove the pan from the heat. Add the QimiQ Cream Base (previously QimiQ Sauce Base) and puree.
Whisk 500 g of the finished parsnip mixture with the egg yolks, feta cheese, flour, bread crumbs, lemon juice and lemon zest until smooth. Season to taste and fold in the whipped egg whites.