Cranberry Bars

Bahan-bahan (16 porsi)

• 1 (12-ounce) bag cranberries (thawed, if frozen)
• ¼ cup pure maple syrup
• ½ lemon (juiced (about 2 tablespoons))
• ¼ teaspoon kosher salt
• 1 tablespoon cornstarch
• 2 cups all-purpose flour
• 1 cup old-fashioned rolled oats
• ¾ cup brown sugar (light or dark)
• ½ teaspoon baking powder
• ¼ teaspoon kosher salt
• ¾ cup unsalted butter (melted)