In a medium saucepan, melt 1 tablespoon of margarine.
Add 3 tablespoons of flour and stir over medium heat for 1 minute, being careful not to brown the flour.
Gradually add the chicken stock and skim milk, whisking constantly until the mixture comes to a boil.
Continue to cook for 1 minute more, then set aside.
Cook Chicken:
In a large skillet, melt the remaining tablespoon of margarine along with canola oil over medium heat.
Add the chicken breasts and cook until browned on both sides, about 5 minutes per side.
Remove the chicken from the skillet and place in a baking dish coated with non-stick vegetable spray.
Cook Mushrooms:
In the same skillet, cook the sliced mushrooms for 5 minutes.
Prepare Sauce:
Stir in the remaining tablespoon of flour, the white wine, and water into the skillet with the mushrooms.
Simmer, stirring, until the sauce thickens, about 10 minutes.
Stir in the 2% milk, salt, tarragon, garlic powder, and black pepper.
Bake:
Pour the sauce over the chicken in the baking dish.
Bake, uncovered, until the chicken is hot and cooked through, about 45 minutes.
Garnish and Serve:
Sprinkle the cooked dish with chopped green onions and parsley.
Bake for an additional 5 minutes.
Serve:
Serve the chicken in white wine mushroom sauce hot, accompanied by your choice of side dishes.
Notes / Tips / Wine Advice:
Wine Advice:
Pair this light chicken dish with a crisp and dry white wine such as Sauvignon Blanc or Chardonnay. These wines will complement the flavors of the dish and enhance the overall dining experience.