3 chipotle chiles in adobo, finely chopped
2 1/2 cups whipping cream
4 medium boneless skinless chicken breast halves
1/2 cup chicken stock
10-12 cups baby spinach, chopped
1/2 teaspoon salt
Combine the chopped canned chipotles with 1/2 cup of the cream in a Ziplock bag.
Add the chicken breasts to the bag, seal and refrigerate for several hours. (The longer you marinate, the more the chiles season the chicken.)
After marinating, preheat the broiler.
Arrange the chicken breasts in a baking dish just large enough to hold them comfortably.
Set 6 inches below a very hot broiler and cook until richly brown, 4 to 5 minutes.
Turn the chicken over, drizzle the remaining cream around them and return to the broiler.
Cook until the chicken is deep golden and no longer squishy feeling when lightly pressed, 4 to 5 minutes.
Transfer the chicken to 4 warm dinner plates and keep warm in a low oven.
Scrape the cream mixture into a large saucepan and add the broth and the spinach.
Bring to a boil over high heat and cook, stirring nearly constantly, until the spinach is wilted and the cream is reduced and thick, about 3 minutes.
Season with salt, then spoon around the chicken breasts to serve.