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Two banana blueberry muffins on white plate with blue and white checkered napkin.

Banana Blueberry Oatmeal Muffins


Bursting with blueberries, combined with the sweet, mellow flavour of bananas, these Banana Blueberry Oatmeal Muffins have a crunchy, sweet streusel topping that will have you coming back for more!


1 and 1/2 cups all-purpose flour

1/2 cup rolled oats

1 tsp. baking soda

1 tsp. baking powder

1/2 tsp. salt

3 large ripe bananas, mashed (this will give you one cup to one and a half cups)

3/4 cup granulated sugar

1 egg, lightly beaten

1/3 cup melted butter, cooled for a few minutes before mixing with other ingredients

1 cup blueberries, fresh or frozen

Streusel topping:

1/3 cup brown sugar

2 tbsp. all-purpose flour

1/8 tsp. cinnamon

1 tbsp. butter, softened at room temperature


  1. In a large mixing bowl, combine all-purpose flour, rolled oats, baking soda, baking powder and salt.
  2. In a small mixing bowl, mix together bananas, granulated sugar, beaten egg and melted butter (allow it to cool slightly before adding).
  3. Pour banana mixture into dry ingredients and mix just until combined.
  4. Gently fold in blueberries.
  5. Divide batter evenly among 12 greased or paper-lined muffin cups.
  6. For streusel topping: In a small mixing bowl, combine brown sugar, flour, cinnamon and butter. 
  7. Sprinkle streusel topping on top of muffins.
  8. Bake in 375 oven for 17-20 minutes or until cake tester inserted in centre comes out clean.
  9. Move to wire baking rack and serve warm or at room temperature.


  1. Freezing Instructions:Muffins can be frozen for up to three months. Cool completely, then place in zippered bag or freezer storage container. Thaw at room temperature or in refrigerator before eating.
  2. Storage Instructions: These muffins will stay fresh in a covered container at room temperature for a few days, or in the refrigerator for one week.
  3. If using frozen blueberries, do now thaw. Add them to the batter directly from the freezer.
  4. You can also use a mini muffins tin for this recipe. Simply reduce the baking time to 12 minutes.
  • Prep Time: 10 minutes
  • Cook Time: 20 minutes
  • Category: Dessert
  • Method: Oven Baked
  • Cuisine: American


  • Serving Size: 1 muffin
  • Calories: 248
  • Sugar: 23.6 g
  • Sodium: 216.1 mg
  • Fat: 7.6 g
  • Saturated Fat: 4.7 g
  • Trans Fat: 0 g
  • Carbohydrates: 42.8 g
  • Fiber: 1.7 g
  • Protein: 3.3 g
  • Cholesterol: 31.7 mg

Keywords: Muffins, Bananas, Blueberries, Breakfast