INGREDIENTS
1 cup
all-purpose flour
1 cup
whole-wheat flour
2 tsp
baking powder
1/2 tsp
salt
8 tbsp
unsalted butter, at room temperature
3/4 cup
sugar
2
large eggs
3
very ripe bananas, peeled and mashed (about 1 1/2 cups)
1 tsp
vanilla extract
2/3 cup
chopped walnuts or pecans, toasted
1/4 cup
Nutella