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Zucchini Blueberry Muffins with Stresel Topping in wrapper with fresh blueberries

Zucchini Blueberry Muffins

Fresh from the garden Zucchini Blueberry Muffins with Stresel Topping, made extra moist with olive oil and sour cream, are so incredibly delicious!
Course Breakfast
Cuisine American
Keyword Zucchini Blueberry Muffins
Prep Time 20 minutes
Cook Time 25 minutes
Total Time 45 minutes
Servings 12 muffins
Calories 284kcal



  • 1 cup all-purpose flour
  • ½ cup whole wheat flour
  • ½ cup brown sugar
  • ¼ cup white sugar
  • 1 teaspoon baking soda
  • 1 teaspoon cinnamon
  • ½ tsp kosher salt
  • ½ cup olive oil
  • ¼ cup sour cream
  • 1 large egg slightly beaten
  • 2 teaspoon vanilla extract
  • 1 ½ cups zucchini shredded with as much liquid squeezed out as possible, packed
  • 1 cup blueberries fresh

Streusal Topping:

  • 3 tablespoons all-purpose flour
  • 3 tablespoons brown sugar
  • ½ teaspoon cinnamon
  • 3 tablespoons unsalted butter cold, cut into small pieces
  • ½ cup pecans crushed


  • Preheat oven to 350 degrees F. Grease 12 muffin cups or line with paper liners.
  • Whisk together flours, sugars, baking soda, cinnamon, and salt together in a bowl. 
  • Whisk olive oil, sour cream, egg, and vanilla extract in a separate bowl until smooth.
  • Stir wet ingredients into flour mixture until batter is just moistened. Batter will be very thick. Stir in shredded zucchini and mix well. Gently fold in blueberries. 
  • To make the streusel, combine flour, sugar, butter, cinnamon, and pecan pieces. Use a fork or a pastry blender to evenly distribute butter chunks. 
  • Fill prepared muffin cups ⅔ full with batter. A cookie scoop works great for this task. Top with equal amounts of streusel.
  • Bake in preheated oven until a toothpick inserted into the center of a muffin comes out clean, 20 to 25 minutes for regular sized muffins or 25-30 minutes for jumbo ovens (cooking times will vary).


Recipe makes 12 regular sized muffins or 6 jumbo muffins. 
Nutrition info is based on one regular sized muffin.


Calories: 284kcal | Carbohydrates: 32g | Protein: 3g | Fat: 16g | Saturated Fat: 4g | Cholesterol: 25mg | Sodium: 217mg | Potassium: 124mg | Fiber: 1g | Sugar: 18g | Vitamin A: 175IU | Vitamin C: 4mg | Calcium: 30mg | Iron: 1.2mg