Sourdough Blueberry Muffins

Ingredients (10)

• + 1 cup fresh blueberries add to pantry
• + 2 teaspoons all-purpose flour add to pantry
• + 1 teaspoon baking soda add to pantry
• + ½ teaspoon ground cinnamon add to pantry
• ✓ ¼ teaspoon salt
• + 1 cup sourdough starter, at room temperature add to pantry
• + ¼ cup white sugar add to pantry
• ✓ 1 egg
• ✓ ¼ cup unsalted butter, melted and cooled
• + 1 teaspoon vanilla extract add to pantry