Arugula- and Parmesan-Topped Polenta Canapes

Preparation

1. Step 1

   Line an 11- by 7-inch baking pan with foil, leaving a slight overhang on all sides.

   Step 2

   In a heavy saucepan bring water with salt to a boil and add polenta in a thin stream, whisking. Cook polenta over low heat (it should be barely boiling), stirring constantly, until very thick, about 10 minutes. Spread polenta evenly in pan.

   Step 3

   Separately mince shallots and garlic and chop arugula. In a non-stick skillet cook shallots in oil over moderate heat, stirring occasionally, until softened, about 5 minutes. Add garlic, arugula, and salt to taste and cook, stirring, a few seconds, or until arugula is just wilted. Spread arugula mixture evenly over polenta and cool to room temperature. Chill polenta, covered, until firm, at least 2 hours, and up to 1 day.

   Step 4

   Preheat oven to 400°F.

   Step 5

   Sprinkle arugula topping evenly with Parmesan, pressing gently to make it adhere, and, using foil, transfer polenta to a cutting board. Cut polenta lengthwise into thirds and cut strips crosswise into 3/4-inch-wide canapés. Arrange canapés on a large baking sheet and bake in upper third of oven 10 minutes, or until just heated through. Change oven setting to broil and broil canapés 2 minutes, or until tops just begin to brown.

   Step 6

   Serve canapés warm or at room temperature.