Mustard Mashed Potatoes

Place the potatoes into a large pot and cover with salted water. Bring to a boil over high heat then reduce heat to medium-low cover and simmer until tender about 20 minutes. Drain and allow to steam dry for a minute or two. Mash potatoes in a large bowl with the butter and milk and season with salt and pepper.

Whip the potatoes using an electric mixer set on medium until smooth 3 to 4 minutes adding more milk if the potatoes are too dry. Beat in the whole grain mustard and serve immediately.