Banana Bread in a Mug

Ingredients:

Non-stick cooking spray
3 tbs flour
1 tbs + 1 tsp sugar
2 tbs  brown sugar
1/8 teas salt
1/8 teas baking powder
1/8 teas baking soda
1 egg
1/4  teas vanilla extract
1 tbs vegetable oil
1 tbs milk
1 ripe banana, mashed

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