Step 1: Prepare the Pumpkin Bar Batter

1. Preheat your oven to 350°F (175°C). Lightly grease a 10×15-inch sheet pan or line it with parchment paper for easy removal.
2. In a large mixing bowl, combine the granulated sugar, vegetable oil, eggs, and vanilla extract. Use a hand mixer or whisk to beat until the mixture is smooth and creamy.
3. Add the Libby’s pumpkin puree to the wet ingredients and mix until well incorporated.
4. In a separate bowl, whisk together the flour, baking powder, baking soda, cinnamon, nutmeg, ginger, cloves, and salt.
5. Gradually add the dry ingredients to the pumpkin mixture, stirring until just combined. Be careful not to overmix, as this can make the bars tough.

Step 2: Bake the Pumpkin Bars

1. Pour the batter into the prepared sheet pan, spreading it evenly with a spatula to ensure even baking.
2. Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
3. Once baked, remove the pan from the oven and let the pumpkin bars cool completely on a wire rack. This can take about an hour.

Step 3: Make the Cream Cheese Frosting

1. In a mixing bowl, beat the softened cream cheese and butter together until smooth and creamy.
2. Gradually add the powdered sugar, about 1 cup at a time, beating well after each addition to avoid lumps.
3. Add the vanilla extract and salt, and beat until the frosting is light and fluffy.

Step 4: Frost the Pumpkin Bars

1. Once the pumpkin bars are completely cooled, spread the cream cheese frosting evenly over the top using an offset spatula or butter knife.
2. For a decorative finish, dust lightly with cinnamon or pumpkin pie spice.
3. Cut into squares or bars and serve immediately, or store in the refrigerator until ready to enjoy.