Creating the Decadent French Chicken with Creamy Mustard-White Wine Sauce is easy if you follow these simple steps:

1. Prepare the Chicken: Season the chicken breasts with salt and pepper on both sides.
2. Heat the Oil: In a large skillet, heat the olive oil over medium-high heat. Once hot, add the chicken breasts.
3. Sear the Chicken: Cook the chicken for about 5-7 minutes on each side, until golden brown and cooked through. Remove the chicken from the skillet and set aside.
4. Sauté the Aromatics: In the same skillet, add the chopped onion and garlic. Sauté for 2-3 minutes until the onion becomes translucent.
5. Deglaze with Wine: Pour in the white wine, scraping the bottom of the pan to release any browned bits. Allow it to simmer for 5 minutes.
6. Add Cream and Mustard: Stir in the heavy cream, Dijon mustard, and thyme. Let the sauce simmer for another 5 minutes until it thickens slightly.
7. Combine and Serve: Return the chicken to the skillet, spooning the sauce over the top. Cook for an additional 2-3 minutes to heat through. Garnish with fresh parsley before serving.

These straightforward instructions will guide you through making this incredible dish with ease!