Banana blueberry oatmeal muffins are an easy one bowl muffin recipe. Make a batch ahead of time for quick snacks and breakfasts for the week. They're tender, have lots of bursts of blueberries and browned crispy edged muffin tops.
Preheat oven to 375 degrees F. Line muffin pan with silicone muffin cups and spray with cooking spray.
Add ½ cup granulated sugar, ½ cup softened butter to medium mixing bowl. Beat with hand mixer until mixture is smooth and fluffy.
Add 1 ½ ripe bananas, 1 egg, ½ cup milk, and 1 teaspoon lemon juice to batter. Beat until smooth.
Add 1 cup all purpose flour, ½ cup whole wheat flour, 2 teaspoons baking powder, ½ teaspoon salt. Beat on low and until just barely incorporated.
If using frozen blueberries, sprinkle 2 teaspoons flour over 1 ½ cup blueberries, and mix until blueberries are coated. This will prevent some bleeding from the blueberries and keep them from all sinking in the mixture.
Add blueberries and ¾ cup oats to mixture. Carefully fold them into batter with rubber spatula.
Using a large spoon or cookie scoop, divide batter evenly between 12 muffin cups. Sprinkle turbinado sugar over each muffin (about 2-3 Tablespoons worth).
Bake for 15-18 minutes, or until a toothpick comes out clean.
Store in airtight container for a couple days, or in freezer bag for months.
Notes
Use frozen or fresh bananas, but make sure they're brown and very ripe.
You can use any combination of whole wheat flour and all purpose flour, but 100% whole wheat flour will make your muffins more dense than fluffy.
You can use either fresh or frozen blueberries in your banana blueberry oatmeal muffins. If using frozen blueberries, toss them in flour before adding to batter.