Keto Chicken Florentine

1) Melt butter in a pan then sprinkle shallots.
2) Add chicken on top of the shallots. Season with salt and pepper.
3) Add enough stock to barely cover the chicken. Bring to a simmer.
4) Cover and poach over low heat for 20-25 minutes.
5) Take chicken out of the pan and set aside.
6) Reduce pan juices to approximately a quarter of a cup.
7) Add spinach and heavy cream. Simmer over low heat until sauce is slightly thick.
8) Return chicken into the pan.
9) Serve hot.