"You just can't beat this mash-up...."
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)