I really wasn't sure if it would be a hit or a miss, but my desire to use up the buttermilk outweighed my concern about any result I might achieve. The gamble paid off. It was delicious! If you ever find yourself with that leftover buttermilk, and don't have a use for it, I encourage you to give this dish a try.
1/2 cup buttermilk
1/4 cup heavy cream (or milk)
1-1/2 tablespoons sugar
1/2 - 1" slices of bread (try something like challah, sourdough or brioche, though anything would work)
In a shallow pie pan, combine buttermilk, cream, sugar and eggs, and whisk well. Add bread slices (as many as will fit at one time), and soak on both sides until egg mixture penetrates the bread (about 1 minute/side).
To a large skillet, add 1 tablespoon of butter (refresh butter, as needed, as you cook each batch of bread slices), and heat over medium until butter is no longer frothy, and starts to brown just slightly (but isn't burning or smoking).
Add soaked bread slices to the heated skillet, and cook until a deep char forms on each side. Remove from pan, and serve with butter and maple syrup.
This recipe is enough for two adult servings.