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Ingredients
- Cooking spray (for greasing)
- 5 large, very ripe bananas
- 1 cup whole wheat flour
- 1 cup all-purpose flour
- 2 tsp baking powder
- 1 tsp baking soda
- ½ tsp sea salt
- 5 tsp unsalted butter, at room temperature
- ½ cup packed light brown sugar
- 1 large egg, at room temperature
- ¼ cup fat-free skim milk, at room temperature
- ½ cup chopped walnuts (optional)
Instructions
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