Start by gathering all the ingredients. Wash and chop the cauliflower, mince the garlic, and set aside.

In a small mixing bowl, combine Dijon mustard, honey, minced garlic, olive oil, salt, and pepper. Whisk until well blended.

Coat the chicken breasts thoroughly with the marinade and set aside for about 10-15 minutes to absorb the flavors.

In a large skillet over medium heat, add a bit of olive oil and place the marinated chicken.

Sear the chicken for about 6-7 minutes on each side, or until cooked through and golden. Once done, remove from the skillet and set aside.

In a large pot, boil water and add the chopped cauliflower. Cook for about 10 minutes or until tender.

Drain the cauliflower and return it to the pot. Add heavy cream, butter, salt, and pepper. Mash until smooth and creamy.

Serve a generous scoop of cauliflower mash on each plate, top with the mustard chicken, and garnish with fresh parsley.