1. Lightly mist large (12 oz/355 mL) mug with cooking spray. 2. In mug, use fork to beat egg; beat in milk, honey, butter and vanilla. Stir in flour, baking powder and pie spice until smooth. 3. Microwave on HIGH for about 1 minute 30 seconds or until cake is cooked in middle. Test Kitchen Tip: • Top cake with whipped cream and chopped pecans, if desired.