Preparation Whisk together first 5 ingredients in a saucepan over medium-low heat; cook, whisking constantly, 13 to 15 minutes or until thickened. Remove from heat; stir in butter and vanilla until butter melts. Layer half of pound cake cubes, half of bananas, and half of pudding mixture in a 3-quart round baking dish. Repeat layers. Cover pudding, and chill 6 hours. Meringue Combine sugar and salt. Beat egg whites and vanilla at high speed with an electric mixer until foamy. Add sugar mixture, 1 tablespoon at a time, beat 2 to 3 minutes or until stiff peaks form and sugar dissolves. Spread Meringue over pudding. Bake at 375° for 15 minutes or until golden brown.