Oatmeal Chocolate Banana Streusel Muffins
Oatmeal Chocolate Banana Muffins are bursting with flavors! They are soft and fluffy muffins made with sweet bananas, cocoa, chocolate chips, and oats. Before baking, the muffins have a buttery streusel sprinkled on top that crisps and melts up perfectly.
Ingredients
For the muffins
- 1 1/4 cups all-purpose flour
- 1/4 cup unsweetened cocoa powder sifted
- 1 1/2 tsps baking powder
- 1 tsp baking soda
- 1 1/4 cups rolled oats
- 1 tsp cornstarch
- 1/4 tsp salt
- 3/4 cups dark brown sugar or light brown sugar
- 1 tbsp vanilla
- 1/2 cup oil
- 2 eggs room temperature
- 2/3 cups full-fat sour cream room temperature
- 1 1/4 cups bananas 3 medium or 2 large, very ripe
- 3/4 cups semi-sweet chocolate chips
For the streusel
- 1/2 cups all-purpose flour
- 4 tbsp butter softened
- 1/4 cup white sugar
- 2 tbsp dark brown sugar
- 1/4 cup rolled oats
- 1/4 tsp cinnamon
Instructions
For the streusel
- In a medium sized bowl, add all-purpose flour, rolled oats, white sugar, dark brown sugar, cinnamon, and softened butter. Using your hands, mix this until crumbly and combined. Set in the fridge while you make the muffin batter.1/2 cups all-purpose flour, 4 tbsp butter, 1/4 cup white sugar, 2 tbsp dark brown sugar, 1/4 cup rolled oats, 1/4 tsp cinnamon
For the muffins
- Preheat the oven to 375℉. Line 2 muffin liners with 14 liners total and set aside. Mash bananas in a large bowl and set aside.1 1/4 cups bananas
- In a medium-sized bowl, add in flour, cocoa powder, oats, salt, cornstarch, baking powder, and baking soda. Using a spatula, mix until just completely combined.1 1/4 cups all-purpose flour, 1/4 cup unsweetened cocoa powder, 1 1/2 tsps baking powder, 1 tsp baking soda, 1 1/4 cups rolled oats, 1 tsp cornstarch, 1/4 tsp salt
- In a large bowl, whisk mashed bananas, oil, eggs, vanilla, sour cream, and brown sugar. Whisk until well combined. There may be lumps from the bananas but that is okay.3/4 cups dark brown sugar, 1 tbsp vanilla, 1/2 cup oil, 2 eggs, 1 1/4 cups bananas, 2/3 cups full-fat sour cream
- Add the dry into the wet and using a spatula, gently fold until a soft batter forms. Do not over-mix!
- Add in the chocolate chips and mix in a few times. Don't over-mix!3/4 cups semi-sweet chocolate chips
- Evenly divide the batter between 14 liners, they should be almost or all the way full. Using a cookie scooper helps big time to minimize the mess. Sprinkle a handful of streusel and chocolate chips on top.
- Bake the muffins at 375°F for 20-25 minutes. The muffins are ready when a toothpick inserted comes out dry with no wet batter.