Cake with pumpkin and walnuts

Pumpkin with butter and sugar stew until tender and the liquid has evaporated. Allow to cool and add the walnuts. The eggs with the sugar crash of fluffy foam, add the milk and flour sifted with baking powder. In a buttered baking dish pour half of the mixture carefully cake, is distributed well over the filling and cover with remaining mixture. Bake at 200 ° C for about 20 minutes. Remove and sprinkle with powdered sugar.