1- Put the onions, mushrooms, tarragon and white wine into the casserole. Add salt and pepper.
2- Cover with perforated cling wrap and cook for 5 minutes using the microwave function at 900 W or 6 minutes at 850 W, depending on your oven.
3- Cut the chicken into pieces and add to the dish.
4- Using the micro grill function of your grill, cook for 10 minutes at 600 W or 10 minutes at 600 W depending on your oven. Stir at the halfway point.
5- Mix the corn flour into the cream and add to the casserole dish, stirring continuously. Check the seasoning.
6- Put back in the oven and, using the micro grill function of your grill, cook for 3 minutes at 600 W or 3 minutes at 600 W depending on your oven.
7- Serve hot.
Serve your fricassee with cracked wheat fried with chopped mixed vegetables.