Pumpkin Gingerbread Trifle

Bahan-bahan (12 porsi)

• One 14-ounce package gingerbread mix
• One 3-ounce box instant vanilla pudding mix
• One 15-ounce can sweetened pumpkin pie filling ((not the puree))
• 1/4 cup packed brown sugar
• 1/4 teaspoon ground cinnamon
• One 6-ounce tub frozen whipped topping, (thawed)
• 1/2 cup broken gingersnap cookies (for garnish), (optional)