Preheat oven to 350* F. Grease an 8x8 inch square baking pan and line it with a parchment paper sling.
In a medium bowl, combine the flour, baking powder and salt. Whisk to combine.
1 ½ Cups All-Purpose Flour, 2 teaspoon Baking Powder, ½ teaspoon Kosher Salt
In a large bowl, combine the sugar and matcha. Whisk until no lumps of matcha remain. Then, add the non-dairy milk, melted vegan butter and vanilla. Whisk well.
1 ¼ Cup Granulated Sugar, 4 teaspoon Matcha Powder, 7 tablespoon Vegan Butter, melted, 1 Cup Non-Dairy Milk, 1 tablespoon Vanilla Extract
Add the dry ingredient into the wet ingredients and whisk to form the batter.
Scrape the batter into a prepared 8x8 inch pan and use a rubber spatula to spread the cake into the corners of the pan.
Bake in a 350* oven for 32-35 minutes or until a toothpick inserted into the center of the cake comes out clean. Allow to cool completely before frosting.