Jumbo Blueberry Muffins

Bahan-bahan (6 porsi)

• 3 cups (375g) all-purpose flour (spooned & leveled)
• 3 teaspoons baking powder
• 1/4 teaspoon baking soda
• 1/2 teaspoon ground cinnamon (optional)
• 1/2 teaspoon salt
• 5 Tablespoons (71g) unsalted butter, melted and slightly cooled
• 1/3 cup (80ml) vegetable oil
• 1 cup (200g) granulated sugar
• 2 large eggs, at room temperature
• 1/3 cup (80g) sour cream or yogurt, at room temperature*
• 1 cup (240ml) milk, at room temperature*
• 1 teaspoon pure vanilla extract
• 1 and 1/2 cups (210g) fresh or frozen blueberries (do not thaw)
• optional: coarse sugar for sprinkling