Easy Caramel Apple Pie Bars

Ingredients (11)

• ✓ 3 cups all-purpose flour
• + 1 cup unsalted butter add to pantry
• + ¾ cup white sugar add to pantry
• + 1 egg add to pantry
• + 1 teaspoon baking powder add to pantry
• + ½ teaspoon salt add to pantry
• ✓ 5 Granny Smith apples, peeled and diced
• + ½ cup brown sugar add to pantry
• + 2 teaspoons ground cinnamon add to pantry
• + ¼ teaspoon grated nutmeg add to pantry
• ✓ 1 tablespoon cornstarch, or as needed