Preheat oven to 350* F. Prepare two 8-inch round cake pans by greasing them with coconut oil and inserting a parchment circle into the bottom of each pan.
In a medium bowl, combine flour, baking powder, baking soda, and salt. Whisk to combine and set aside.
2 ⅔ Cups All-Purpose Flour, 2 ½ teaspoon Baking Powder, ¼ teaspoon Baking Soda, ½ teaspoon Kosher Salt
In a large bowl, combine the non-dairy milk, sugar, melted non-dairy butter, lemon zest, lemon juice, and vanilla extract. Whisk well to combine. Then, add the dry ingredients to the wet ingredients and whisk to form the batter.
1 ½ Cup Non-Dairy Milk, 1 ½ Cup Granulated Sugar, 9 tablespoon Non-Dairy Butter, melted and cooled, 2 teaspoon Lemon Juice, 2 teaspoon Vanilla Extract, 2 teaspoon Lemon Zest
Divide the batter equally between the two prepared 8-inch cake pans and use a spatula to spread the batter evenly. Then, top each pan of batter with 3 tablespoons of blackberry jam. Try to distribute the jam evenly across the batter. Then, take a butter knife and gently swirl the jam into the batter.
6 tablespoon Blackberry Jam
Bake in a 350* F oven for 31-33 minutes or until a toothpick inserted into the center of the cakes comes out clean.
Allow the cakes to cool completely before stacking.