Step 1: Preheat Oven Preheat your oven to 375°F (190°C) and grease/flour a 15 x 10-inch jelly-roll pan.
Step 2: Prepare Dry Ingredients In a small bowl, combine flour, baking powder, baking soda, cinnamon, cloves, and salt. Set aside.
Step 4: Incorporate Pumpkin Add Libby’s 100% Pure Pumpkin to the egg-sugar mixture and mix well.
Step 5: Combine Dry and Wet Ingredients Gradually add the dry ingredients to the pumpkin mixture, stirring until smooth.
Step 6: Spread Batter Spread the batter evenly into the prepared jelly-roll pan. Sprinkle chopped walnuts evenly over the batter if desired.
Step 7: Bake Bake for 13 to 15 minutes, or until the cake bounces back when you touch it.
Step 8: Prepare Towel While the cake is baking, lay out a clean kitchen towel and dust it with powdered sugar.