Ingredients
Method
- Preheat oven to 350°F (177°C). Grease or line a 10×15-inch pan with parchment, leaving overhang for easy removal.
- In a large bowl, whisk flour, baking powder, baking soda, salt, cinnamon, and pumpkin pie spice.
- In another bowl, whisk oil, eggs, brown sugar, granulated sugar, maple syrup, pumpkin puree, and vanilla until smooth.
- Pour wet mixture into dry ingredients. Stir gently until just combined—do not overmix.
- Spread batter evenly in the pan. Bake 28–35 minutes or until a toothpick comes out clean. Tent with foil if edges brown too quickly.
- Cool completely in the pan on a wire rack—about 45 minutes.
- Beat cream cheese and butter until creamy. Add confectioners’ sugar, vanilla, pumpkin spice, and salt. Beat until fluffy.
- Spread frosting over cooled bars. Chill 30 minutes before slicing for clean cuts.
- Store frosted bars covered in the fridge for up to 5 days.
Notes
For a homemade pumpkin pie spice, mix 3 tsp cinnamon, 2 tsp ginger, 1 tsp nutmeg, and 1/2 tsp cloves. To make dairy-free, substitute cream cheese and butter with dairy-free alternatives. Do not overbake—remove from oven as soon as a toothpick comes out clean for maximum moisture.