Blueberry Cheddar Gluten-Free Scones - Blueberries

Ingredients

• 1/2 cup millet flour
• 3/4 cup rice flour
• 1 teaspoon baking powder
• 1/2 teaspoon salt
• 1 teaspoon sugar
• 6 tablespoons cold unsalted butter, cubed into 1/4 inch cubes
• 1 egg
• 1/2 cup whole milk + more for brushing
• 1/2 cup frozen blueberries
• 1/2 cup shredded white cheddar plus 2 tablespoons