Creating these Frosted Pumpkin Blondie Squares is a rewarding and straightforward process. Follow these steps, and you’ll be enjoying your pumpkin treat in no time.

Step 1: Prepare the Blondies

1. Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish with butter or line it with parchment paper for easy removal.
2. In a large mixing bowl, combine the melted butter, brown sugar, and granulated sugar. Whisk until smooth and well combined.
3. Add the eggs and vanilla extract to the mixture, stirring until fully incorporated.
4. Mix in the pumpkin puree, cinnamon, nutmeg, ginger, cloves, and salt. Stir until the spices are evenly distributed throughout the batter.
5. Slowly fold in the all-purpose flour and baking powder. Mix until just combined, being careful not to overmix.
6. Pour the batter into the prepared baking dish, spreading it out evenly with a spatula.
7. Bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean.
8. Allow the blondies to cool completely in the baking dish before adding the frosting.

Step 2: Prepare the Frosting

1. In a medium-sized bowl, beat the softened butter until light and fluffy.
2. Slowly add the powdered sugar and continue beating until smooth.
3. Pour in the heavy cream and vanilla extract, and beat until the mixture is creamy and spreadable.
4. Add the ground cinnamon and mix until fully incorporated.

Step 3: Assemble the Frosted Pumpkin Blondie Squares

1. Once the blondies are completely cool, spread the frosting evenly over the top using a spatula or butter knife.
2. For a decorative touch, sprinkle a pinch of ground cinnamon or nutmeg on top of the frosting.
3. Cut the blondies into squares and serve.