Step 1

Preheat the oven to 350 degrees F and prepare a 9x13-inch baking pan by lining it with parchment paper.

Step 2

In a small bowl, mix the flax meal and water. Set aside for 5 minutes.

Step 3

In a large bowl, using an electric mixer or a whisk, mix the vegan butter and sugar. Mix until light and fluffy for about 2 minutes. Add the flax mixture, vanilla, and pumpkin puree and beat for 2 minutes until incorporated.

Step 4

In a large bowl, mix all the dry ingredients and add them to the bowl with the wet ingredients. Mix until just combined and do not overmix.

Step 5

Pour the batter into the prepared baking pan and smooth top with a spatula.

Step 6

Bake for 30 minutes. Insert a fork into the cake. If it comes out clean, the cake is ready. If not, bake for 5 minute increments.

Step 7

When ready, using the parchment paper, lift the cake and place it on a cooling rack. Allow it to cool completely before frosting.