Banana Mug Cake with Simple Cream Cheese Frosting

Ingredients

• 1/3 cup all-purpose flour
• 1/4 cup granulated sugar
• 1/4 tsp baking powder
• 1/8 tsp cinnamon
• 1 pinch salt
• 1/2 overripe banana, mashed very well (scant 1/4 cup)
• 1 tbsp vegetable oil
• 1 tbsp applesauce
• 1 tbsp buttermilk
• 1 large egg yolk
• 1/4 tsp vanilla extract
• 1 recipe Quick Cream Cheese Frosting, recipe follows
• 1 Tbsp chopped pecans or walnuts, optional
• Banana slices, optional 
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