There's a lot of words and ingredients in the title of this meal; it almost looks like a grocery store feels, full of food and intimidating. Never fear! The little extra elbow grease needed to make these delicious elements will be instantly forgiven once you taste the sum total. And those elements… the creamy decadent gratin of mashed potatoes, the fresh broccolini, the juicy steak, and the deep yet tart sauce. Lots of words, even more flavor.