To Die For Blueberry Muffins

Details

Ingredients

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