Strawberry Muffins

Bahan-bahan (12 porsi)

• 2 cups all-purpose flour
• 2 teaspoons baking powder
• ½ teaspoon cinnamon
• ½ teaspoon salt
• 1 cup granulated sugar
• 1 egg (beaten, room temperature)
• ½ cup sour cream
• ½ cup butter (melted, or vegetable oil)
• ¼ cup milk
• 2 teaspoons vanilla extract
• 1 ¾ cups chopped fresh strawberries