spiced scones with a maple and walnut glaze

Ingredients

• 2 cups all purpose flour
• 1 tablespoon baking powder
• 1/2 teaspoon fine salt
• 2 tablespoons sugar
• 1 tablespoon cinnamon
• 1/2 teaspoon nutmeg
• 1/4 teaspoon ginger
• 5 tablespoons butter, unsalted
• 1 cup heavy cream, cold, plus more for brushing scones
• 1/2 teaspoon maple extract
• 1 cup walnuts, roasted, and finely chopped, divided
• 1-2 tablespoon brown sugar
• FOR GLAZE
• 1/2 cup powered sugar
• 1/4 teaspoon cinnamon
• 1 tablespoon butter
• 1/2 teaspoon vanilla
• 1/4 cup or more of pure maple syrup
• 1/2 cup of roasted walnuts
• - heavy cream