INGREDIENTS
4 tbsp
butter (, softened)
1/2 cup
sugar
1
whole egg
1 tsp
pure vanilla extract
2
bananas (, mashed)
1 cup
all-purpose flour (, divided)
1/2 tsp
ground cinnamon
1/2 tsp
baking soda
1/4 tsp
baking powder
1/4 tsp
salt
1 cup
fresh blueberries