<http://schema.org/recipeInstructions>
" Heat the oven to 350 degrees F. Butter a 9- by 9-inch baking pan, line the bottom with parchment paper, and butter and flour the entire pan. Combine the flour, baking powder, and salt and set aside. Beat the butter and 1 cup sugar together using a mixer on medium speed, until fluffy. Beat in the eggs, yolk, and vanilla and gently stir in the flour mixture. Pour the batter into the prepared pan, top with the plums, and sprinkle with the remaining 1 tablespoon sugar and the cinnamon. Bake on the center rack of the oven until the cake is golden and a cake tester inserted into the center comes out clean -- about 40 minutes. Cool on a wire rack."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.countryliving.com/food-drinks/recipes/a846/plum-buckle-27/>