Lemon Chicken with Mushroom Sauce

1 tbspolive oil
8chicken breasts (skinless, boneless)
1lemon
¼ cupbutter
3 cupsmushrooms (fresh, sliced)
2 tbspflour
½ cupchicken broth
1 tbspparsley (fresh, chopped)
1Preheat the oven to 400°10 min
2Put chicken in a single layer of an 8×8 glass baking dish coating each with olive oil2 min
3Squeeze the juice of half the lemon over the chicken breasts; slice the other half and place a slice over each breast.5 min
4Cook the chicken in the oven until they reach 170°.15 min
5While the chicken is in the oven, melt the butter in a saucepan.2 min
6Add the mushrooms and cook until they are soft and brown and the liquid has evaporated.6 min
7Sprinkle flour over the mushrooms and stir until coated.1 min
8Add the chicken broth and stir to make a medium-thick sauce.2 min
9Add parsley just as the sauce is finally thickening.1 min
10Once the chicken is cooked, plate each breast and cover with mushrooms and sauce.2 min