Preheat the oven to 350F/177C convection (325F/163C conventional) and grease and line a 9x5 inch loaf pan.
In a large mixing bowl or the bowl of a stand mixer, whisk together the all purpose flour, granulated sugar, brown sugar, pumpkin pie spice, baking powder and salt until they're evenly distributed.
240 grams (2 cups) all-purpose flour, 150 grams (3/4 cup) granulated sugar, 100 grams (1/2 cup) dark brown sugar, 2 Tbsp pumpkin pie spice, 10 grams (1 Tbsp) baking powder, 1/2 tsp fine sea salt
Add the room temperature butter and use an electric mixer fit with the whisk attachment to beat the mixture for 2-3 minutes, at medium speed, until pea size chunks form.
227 grams (1 cup) salted butter
Turn the mixer up to high for 1 minute, until the mixture starts to look more like a paste.
Add in the eggs, one at a time, beating on medium speed until each egg is fully incorporated. Make sure to scrape the sides and bottom of the bowl every so often.
3 large eggs
Add the pumpkin puree and beat just until it's combined.
244 grams (1 cup) pumpkin puree
Spread the batter evenly in the prepared pan bake for about 55-60 minutes, until it springs back when you press on the tallest part.
Allow the cake to cool in the pan for 15-30 minutes and then remove from the pan and allow it cool to room temperature.