Prepare the Mashed Potatoes by peeling and cubing the potatoes, boiling them until tender, mashing with warm milk and butter, and seasoning to taste.

Glaze the Carrots by melting butter, adding carrots and brown sugar, sautéing until tender and glazed.

Cook the Chicken by seasoning, searing in a skillet until golden and cooked through, then keep warm.

Make the Sauce by sautéing garlic, adding chicken broth, then cream, mustard, and herbs, simmering until thickened.

Combine and Serve by returning chicken to skillet, spooning sauce, and serving with mashed potatoes and carrots, garnishing with herbs.