Step 1

In a small bowl, combine the Dijon mustard, lemon juice, garlic, herbs and red pepper. Reserve the heavy cream and chicken broth.

Step 2

Pat the chicken thighs as dry as possible with paper towels (this will help crisp up the skin). Season the chicken generously on both sides with salt and pepper.

Step 3

Place a large (12-inch) non-stick saute pan over medium-high heat. Add the oil and heat until the surface is shimmering. Arrange the chicken pieces skin-side down in the pan and cook without moving them, until the skin turns golden brown, 5-7 minutes. Turn the chicken over and cook 2 minutes on the other side. Remove the chicken from the pan to a large plate. Note: Brown the chicken in two batches if the chicken seems crowded in the pan.

Step 4

Add the onion to the fat in the pan, and cook about 2 minutes, stirring, until softened. Pour in ¼ cup of chicken broth, scraping up the browned bits from the pan with a wooden spoon or spatula. Sprinkle the flour over the onions and stir it in, just until it starts to thicken.

Step 5

Stir in the Dijon mixture and remaining ½ cup broth. Add the chicken back to the pan, skin-side up. Cover the pan, lower the heat and cook 15 minutes, adjusting the heat as necessary to maintain a gentle simmer (not boiling).

Step 6

Uncover the pan. Pour the cream around the chicken pieces, and scatter the kale or spinach leaves over the top. Bring back to a simmer, then cover the pan and cook about 5 more minutes, until the kale is wilted and the chicken is cooked through (no longer pink at the bone).

Step 7

Serve the chicken with the pan juices spooned over. Enjoy!