I start by seasoning the chicken thighs on both sides with salt and pepper. In a hot skillet with olive oil, I place the thighs smooth-side down and let them sear for about 4 minutes until golden. Then I flip them and cook for another 4–5 minutes until done. Once cooked through, I remove the chicken and set it aside to rest while I make the sauce.
With the heat turned to medium-low, I pour the cream directly into the pan, followed by the Dijon and wholegrain mustards. I whisk it gently, scraping the browned bits from the bottom of the skillet—this adds so much depth to the sauce. Let it simmer gently, but don’t boil it.
Once the sauce thickens slightly, I stir in fresh tarragon and parsley. This really brightens up the dish and complements the mustard. If it gets too thick, I add a splash of water. I always taste and adjust with a bit more salt or pepper if needed.
I return the chicken to the pan and spoon the warm sauce over each piece. The chicken soaks up all the flavor from the sauce as it rests. I serve it immediately—usually over mashed potatoes or buttered rice—and top with more fresh parsley.