Blackberry Muffins Recipe

Ingredients

• 2 1/2 cups (320g) all purpose flour
• 1 tablespoon baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 teaspoon cinnamon
• 1 cup (200 g) sugar
• 2 large eggs
• 1 cup (236ml) sour cream
• 8 tablespoons warm melted butter (1 stick, 112 g)
• 1 teaspoon milk or water
• 1 teaspoon vanilla