Blackberry Muffins

     Prep time: 20 minutes
     Cook time: 20 minutes
     Yield: Makes about 18 muffinsINGREDIENTS

• 2 1/2 cups (320g) all purpose flour
• 1 Tbsp baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 teaspoon cinnamon
• 2 large eggs
• 1 cup (236ml) sour cream
• 1 teaspoon milk
• 1 cup (200 g) sugar
• 8 Tbsp warm melted butter (1 stick, 112 g)
• 1 teaspoon vanilla
• 1 1/2 cups (about 5-6 oz, about 150g) of blackberries, fresh or frozen (if using fresh berries, cut them in half, if using frozen berries, defrost first, drain excess liquid, then coat them lightly in flour)