Blackberry Lime Muffins

Ingredients (12)

• 1 1/2 cups all-purpose flour
• 1/2 teaspoon salt
• 2 teaspoons baking powder
• 1/2 cup sugar
• Zest of 2 limes
• 1/4 cup canola oil
• 1 large egg
• 1/3 cup buttermilk
• 1 tablespoon fresh lime juice
• 1 teaspoon vanilla extract
• 1 cup blackberries
• Turbinado sugar-for sprinkling on muffins before baking