Dried Cranberry, Walnut, and Lemon Scones

INGREDIENTS

• 2 tablespoons fresh lemon juice, divided
• 1/2 cup coarsely chopped walnuts
• 1 tablespoon finely grated lemon peel
• 3/4 cup (1 1/2 sticks) chilled unsalted butter, diced
• 1 tablespoon baking powder
• 1 teaspoon salt
• 3 cups all purpose flour
• 1/2 cup (or more) chilled half and half, divided
• 2 tablespoons plus 1 cup sugar
• 1 cup dried sweetened cranberries