Peel and cut the potatoes into large pieces (at least an inch thick). Peel and slice the carrots.
Add the potatoes, carrots and dill to a sauce pan and cover with cold water.
Bring to a boil and reduce heat to simmer the potatoes and carrots until the are both easily pierced with a fork - should take about 20 minutes.
Remove the dill and drain the water from the potatoes and carrots. Add the butter and one teaspoon of salt and mash.
In a small bowl whisk together the Dijon mustard, remaining 1/4 teaspoon of salt and maple syrup.
Serve the carrot mashed potatoes alongside Barber Foods Chicken Cordon Bleu and roasted asparagus. Drizzle everything with the Dijon mustard sauce to serve.