In small saucepan over med-high heat, combine butter, honey, whisky, and sugar. Bring to simmer, whisking until butter and sugar are melted, reduce the heat to med-low and simmer, uncovered for 10 minutes.
In large bowl (or ziplock bag if you let the butter mix cool a bit), toss potatoes with butter mixture, salt, and pepper. Transfer to prepared dish and bake, tossing occasionally, until tender and glazed, about 45 minutes. Serve warm.
*Optional, add chopped nuts mixed throughout or sprinkle on top for last half of baking.