Preheat your oven to 350°F (175°C).
Grease a 9×13 inch baking dish or line it with parchment paper.
In a large mixing bowl, whisk together the pumpkin puree, honey, vegetable oil, and eggs until well combined.
In a separate bowl, whisk together the flour, baking powder, cinnamon, and salt.
Slowly add the dry ingredients to the wet ingredients, mixing gently until just combined.
Transfer the batter into the baking dish, spreading it evenly.
Bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean.
Let cool for about 10 minutes before slicing. Serve warm.