Dark Chocolate Cheesecake Thumbprint Cookies

for the filling

plain nonfat Greek yogurt

Greek yogurt cream cheese, softened

vanilla crème stevia, or adjusted to taste

vanilla extract

for the cookies

white whole wheat flour (measured like this)

unsweetened cocoa powder (measured like this)

cornstarch

baking powder

salt

unsalted butter or coconut oil, melted and cooled slightly

large egg, room temperature

vanilla extract

coconut sugar