From Vic's Recipes

Adapted from Marian Burros, The New York Times

1 stick unsalted butter, softened
¾ cup plus 1 or 2 tablespoons sugar
1 cup unbleached flour, sifted
1 teaspoon baking powder
2 eggs
Pinch salt
24 halves pitted Italian (prune) plums*
1 teaspoon cinnamon or more, to taste

Preheat the oven to 350 degrees. Cream the butter with ¾ cup of sugar. Add the flour, baking powder, eggs, and salt to the butter/sugar mixture, and beat to mix well.

Spoon the batter into an ungreased 8- or 9-inch springform pan. Spread it to the edges with the spoon. It is thick, and you don't have to get it perfectly smooth.

Cover the top with the plums, skin sides down. Mix the cinnamon with the remaining 1 or 2 tablespoons of sugar and sprinkle over the top.

Bake on a rack in the lower third of the oven for 40 to 50 minutes, until a cake tester inserted in the center comes out clean. Remove from the oven, and let cool.

This is fine plain but really shines when served with vanilla ice cream or softly whipped cream or thick plain yogurt or crème fraiche .