Follow these simple steps to create your very own Old Fashioned Pumpkin Bars with Cream Cheese Frosting:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking dish or line it with parchment paper for easy removal.

2. Mix Wet Ingredients: In a large mixing bowl, combine granulated sugar, brown sugar, and vegetable oil. Mix until well blended. Add eggs one at a time, whisking until fully incorporated. Stir in the pumpkin puree and vanilla extract.

3. Combine Dry Ingredients: In a separate bowl, whisk together the flour, baking powder, cinnamon, nutmeg, ginger, and salt.

4. Combine Mixtures: Gradually add the dry mixture to the wet ingredients, stirring until just combined. Make sure not to overmix; a few lumps are okay.

5. Pour into Baking Dish: Pour the pumpkin batter into the prepared baking dish, spreading it evenly with a spatula.

6. Bake: Place in the preheated oven and bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean.

7. Cool: Once baked, remove from the oven and allow the bars to cool in the pan for about 30 minutes.

8. Prepare Cream Cheese Frosting: While the bars cool, beat the softened cream cheese with a mixer until smooth. Gradually add powdered sugar, mixing well. Add the vanilla extract and enough milk to reach your desired frosting consistency.

9. Frost the Bars: Once the pumpkin bars are completely cool, spread the cream cheese frosting evenly over the top using a spatula.

10. Serve or Store: Cut into squares and serve immediately, or store them covered in the refrigerator for later enjoyment.

By following these steps, you will achieve moist, flavorful pumpkin bars crowned with a luscious cream cheese frosting that everyone will adore.