Bearnaise as a sandwich spread?

Absolutely! Chilled Bearnaise sauce is a great spread for a roast beef sandwich. I made a nice tenderloin roast over the weekend, and some red-wine blender Bearnaise to go with it. Leftovers of both. When you chill Bearnaise, it ends up like very soft butter (not surprisingly!). Spread on a baguette, with some nice roast beef and tomatoes it makes a wonderful sandwich. Add some Brie and it becomes sublime. Along with this, we had what I ended up calling "Mardi Gras Potato Salad." Why Mardi Gras? Because it had purple potatoes in it (I'd roasted new purple potatoes along with the tenderloin) as well as eggs and celery, so you get the purple, green and gold of Mardi Gras in the salad. I cut the usual mayonnaise with nonfat yogurt and it was quite good.