Preheat the oven to 400°F.

Cup of Yum
1. Butter one side of a sheet of wax paper that is cut to the size of the casserole.
2. Place the chicken breast between two sheets of wax paper and pound it with a meat mallet until it is an even thickness (about 1/2" thick) - it will cook more evenly. Cut the chicken breast pieces in half or into thirds (if desired). Rub the chicken breast with lemon juice. Season both sides with salt & pepper.
3. Heat 4 tablespoons butter in a large casserole in the oven at 400°F. Once the butter is foaming and bubbly, quickly roll the chicken in the butter and lay the buttered side of the wax paper over the chicken. Cover the casserole with foil and place in the hot oven for 6 to 8 minutes. Don't crowd your chicken or it will take much longer to bake.
4. Test the chicken at 6 minutes; if the meat is springy to the touch, it is done. If it's still soft, return to the oven for another 2 minutes.
5. Take the casserole out of the oven and pour the remaining butter into a large heavy bottomed skillet over medium/high heat.
6. Add chives and heat until fragrant (1 minute). Add mushrooms and cook, stirring occasionally, until tender, about 3 to 4 minutes.
7. Over high heat, add white wine and chicken broth and boil until liquid is syrupy, stirring constantly. Stir in the cream and simmer until sauce begins to thicken.
8. Reduce the heat to low. Taste the sauce and add more lemon juice to taste and salt if desired. Place the chicken back in the pan and coat with the sauce until heated through. *Sprinkle with parsley and serve!