Starbucks Blueberry Muffin is loaded with blueberries and topped with crumbly streusel. Get the easy copycat recipe to make the best muffins with fresh blueberries and crumb topping. Save money and make these homemade blueberry muffins instead of buying them at Starbucks. These moist and soft muffins with blueberries are perfect for breakfast or afternoon snack.
Mix the melted butter, sugar, lemon zest, and flour together in a small bowl. Set aside.
Muffins
Preheat the oven to 425°F. Grease a muffin tin with non-stick spray.
Whisk the melted butter, vegetable oil, eggs, and milk (or buttermilk) in a bowl until the mixture is uniform.
In another bowl, add 2 1/2 cups sifted flour, sugar, baking powder, and baking soda. Stir to combine.
Combine the whisked egg mixture with the dry ingredients, and stir.
Sprinkle 1 tablespoon flour over the blueberries. Then add the blueberries to the muffin batter. Stir only until they are mixed to avoid bursting the blueberries.
Fill each muffin cup 2/3 full with batter, and top with the streusel mixture.
Bake at 425°F for 10 minutes. Then lower the oven temperature to 375°F and bake for another 10 or 15 minutes.