Preheat your oven to 350°F (175°C). This ensures your cookies bake evenly and get that perfect golden color.
In a large mixing bowl, combine the vegetable oil, dark brown sugar, granulated sugar, unsweetened apple sauce, and vanilla extract. Whisk everything together until well combined and smooth.
In a separate bowl, whisk together the all-purpose flour, matcha powder, baking soda, and salt. Gradually add the dry ingredients to the wet mixture, stirring until just combined. Be careful not to over-mix; a few lumps are perfectly fine!
Gently fold in the white chocolate chips into the cookie dough. This will add a creamy sweetness to your cookies, balancing the matcha flavor beautifully.
Using a cookie scoop or tablespoon, drop rounded balls of dough onto a lined cookie sheet, spacing them about 2 inches apart. Bake in the preheated oven for 10-12 minutes or until the edges are set and the centers look slightly underbaked.
Remove the cookies from the oven and allow them to cool on the baking sheet for about 5 minutes before transferring them to a wire rack. This step helps them firm up while still being soft and chewy. Enjoy your Vegan Matcha Cookies warm or at room temperature!