To Die For Blueberry Muffins

Ingredients (10)

• + 1 ½ cups all-purpose flour add to pantry
• + ¾ cup white sugar add to pantry
• + ½ teaspoon salt add to pantry
• + 2 teaspoons baking powder add to pantry
• ✓ ⅓ cup vegetable oil
• + 1 egg add to pantry
• + ⅓ cup milk, or more as needed add to pantry
• ✓ 1 cup fresh blueberries
• + ¼ cup butter, cubed add to pantry
• + 1 ½ teaspoons ground cinnamon add to pantry