Blueberry Cornmeal Scones

Ingredients

• 1 1/3 cups all-purpose flour
• 2/3 cup yellow cornmeal
• 2 tablespoons granulated sugar
• 2 tablespoons brown sugar, packed
• 1 1/2 teaspoons baking powder
• 1/4 teaspoon baking soda
• 1/2 teaspoon salt
• 1/3 cup cold butter, grated or chopped
• 1/2 cup buttermilk
• 1 egg
• 1 1/2 teaspoons lime zest
• 1 cup frozen blueberries
• 1 teaspoon cornstarch
• 1 cup powdered sugar, plus more, to taste
• 4 teaspoons lime juice, plus more, to taste
• 3 tablespoons almonds, toasted and chopped