For an older adult, I would recommend serving a smaller portion of Maryland roast (perhaps 4-6 ounces), a baked potato with a dollop of sour cream and chives, and a side salad with a light vinaigrette dressing.
To complement this meal, I would suggest serving a glass of red wine, such as a Pinot Noir. Red wine is known to have various health benefits for older adults, including promoting heart health, reducing inflammation, and potentially improving cognitive function. Additionally, the flavors of a Pinot Noir would pair nicely with the savory Maryland roast and the fresh salad, enhancing the overall dining experience.