Blueberry Lemon Muffins - Olga's Flavor Factory

Ingredients

• 1 cup butter, softened to room temperature
• 1 1/4 cup granulated sugar
• 1 teaspoon vanilla extract
• 3 eggs, room temperature
• 2 1/2 cups all purpose flour
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/4 teaspoon salt
• 1/2 Tablespoon lemon juice
• 1/2 teaspoon lemon zest
• 1/2 cup sour cream
• 1/2 cup milk
• 2 cups blueberries, fresh or frozen