Place paper liners in microwaveable cupcake pan or custard cups. Fill cups half full with batter. Microwave on high for 2-3 minutes or until surface is almost dry, giving plate a half turn at 1 minute intervals. Yield 10 cupcakes.

Icing: Microwave butter on low for 30-45 seconds in a glass mixing bowl. Add 1/2 cup powdered sugar, cinnamon and salt. Beat until light and fluffy. Add remaining sugar alternately with milk, beating until smooth. Add vanilla and stir. Yield enough for 10 cupcakes.