Microwave Pumpkin Coffee Cake

• 9 round microwave safe dish
• 2 microwave-safe bowl
• 1 egg
• 1/4 turn halfway through bakin microwave on high
• 160 gr flour
• 120 ml dairy sour cream
• 110 gr firmly packed brown sugar
• 75 gr margarine
• 75 gr margarine on high
• 65 gr sugar