Peel the carrot, halve it lengthwise and cut into slices. Cook carrot in little boiling salted water for about 10 minutes. Add the peas to the carrots 5 minutes before the end of the cooking time. Season turkey escalopes with salt and pepper and spread with mustard.
Heat the oil in a pan. Fry the turkey escalopes for 6 minutes while turning. Turn from time to time. Bring milk, 1/8 litre water and some salt to the boil. Stir in the purée. Drain carrot and peas and add butter.
Swivel the vegetables in it. Sprinkle with chopped parsley. Arrange everything on a plate. Garnish with parsley.