No one will guess this showstopper dessert with luscious cinnamon frosting starts with a mix! It's a year-round favorite. —Linda Murray, Allenstown, New Hampshire

TOTAL TIME: Prep: 25 min. Bake: 25 min. + cooling

YIELD: 12 servings.

Ingredients

• 1 package yellow cake mix (regular size)

• 3 large eggs, room temperature

• 1 cup water

• 1 cup canned pumpkin

• 1-3/4 teaspoons ground cinnamon, divided

• 1/4 teaspoon ground ginger

• 1/4 teaspoon ground nutmeg

• 2-1/2 cups vanilla frosting

• 1-1/4 cups chopped walnuts

• Additional ground cinnamon

Directions

• 1. In a large...