Preheat the oven to 350°F (175°C). Grease and flour a baking pan.

In a mixing bowl, whisk together the dry ingredients: flour, sugar, baking soda, baking powder, cinnamon, nutmeg, and salt.

In another bowl, combine the wet ingredients: pumpkin puree, vegetable oil, eggs, and vanilla extract. Mix until well combined.

Gradually add the wet mixture to the dry ingredients, stirring until just combined. Do not overmix.

Pour the batter into the prepared baking pan and spread evenly.

Bake in the preheated oven for 30 minutes, or until a toothpick inserted in the center comes out clean.

Allow to cool in the pan for 10 minutes before transferring to a wire rack to cool completely.