makes one 9- by 13-inch pan, resulting in about a pint of compote
Preheat oven to 400°F. Prepare the plums and scatter them in a baking dish just large enough to hold them in a single layer. The amounts in this recipe are for a 9- by 13-inch pan.
Pour the orange juice over the plums, sprinkle with brown sugar, dot with butter, sprinkle the salt, and spritz the lemon juice (if desired). Bake for 20 minutes then turn oven to broil and cook for 4 minutes to thicken the juices and darken the plums in a few spots (keep a close eye on things so it doesn't burn).