Banana Muffins with Oat Streusel — Ronnie Fein

Ingredients

• 1-3/4 cups flour
• 1 teaspoon baking soda
• 1/2 teaspoon baking powder
• 3/4 teaspoon salt
• 1 teaspoon cinnamon
• 3 very ripe bananas, mashed
• 3/4 cup buttermilk or sour milk
• 1/4 cup honey
• 3 tablespoons vegetable oil
• 1 large egg
• 1-1/2 teaspoons vanilla extract
• 3 tablespoons flour
• 2 tablespoons old fashioned oats
• 2 tablespoons sugar
• 1 tablespoon butter