Ingredients

• Cooking spray

• 4 tablespoons 

  unsalted butter

• 1 1/2 cups 

  all-purpose flour

• 1 teaspoon 

  baking soda

• 3 

  very ripe large bananas

• 1 

  large egg

• 1/2 cup 

  packed light brown sugar

• 1/2 cup 

  Greek yogurt or sour cream

• 1 teaspoon 

  vanilla extract

• 1/2 teaspoon 

  kosher salt

• 1 1/4 cups 

  fresh or frozen blueberries, divided (about 5 1/2 ounces, do not thaw)

Description

1. Arrange a rack in the middle of the oven and heat the oven to 350°F. Coat a 8 1/2x5-inch loaf pan with cooking spray; set aside.

2. Microwave 4 tablespoons unsalted butter in a small microwave-safe bowl in 20-second increments until melted, 40 to 50 seconds total. (Alternatively, melt in a small saucepan over medium heat.) Set aside to cool until just warm.

3. Place 1 1/2 cups all-purpose flour and 1 teaspoon baking soda in a medium bowl and whisk to combine.