Rhubarb-Filled Cookies

Directions

1. In a large bowl, cream butter and sugars until light and fluffy, 5-7 minutes. Add eggs, 1 at a time, beating well after each addition. Combine the flour, baking soda and salt; gradually add to creamed mixture and mix well. (Dough will be sticky.)
2. For filling, combine the rhubarb, sugar and 2 tablespoons water in a large saucepan; bring to a boil. Reduce heat; simmer, uncovered, until thickened, stirring frequently, about 10 minutes. Combine cornstarch and remaining water until smooth; stir into rhubarb mixture. Bring to a boil; cook and stir until thickened, about 2 minutes. Remove from the heat; stir in vanilla.
3. Drop dough by tablespoonfuls 2 in. apart onto ungreased baking sheets. Using the end of a wooden spoon handle, make an indentation in the center of each cookie; fill with a rounded teaspoon of filling. Top with 1/2 teaspoon dough, allowing some filling to show. Bake at 375° until lightly browned, 8-10 minutes.