it may be within your power to make a stone fruit crumble this summer. you might be able to get your hands one, two, even three varieties of plums. you might cut and mix them with yellow peaches and fresh pitted cherries and lemon juice and cardamom and cinnamon and sugar. theoretically you could mix some butter with some rolled oats and flour and brown sugar and salt and you might sprinkle that over the fruit and bake in the oven until golden and bubbling