Preheat the oven to 350°F Lightly spray the Madeleine pan with pan spray & a light dusting of flour
Prepare the cake batter by combining the vinegar with the plant milk. Add the vanilla extract & reserve aside
Combine the flours, baking soda, salt & sugar in a large mixing bowl & whisk or sift together
Add the thickened plant milk, applesauce & melted vegan butter, whisk to develop the batter~ about 20 strokes.
Portion into the Madeleine Pan by using a #100 scoop~ each cavity will get a heaping scoop or fill just to below the rim to allow for rising
Bake for 10 minutes or until light golden brown & springy to the touch when you gently press the centers
Cool slightly in the pan them flip them out onto a cooling rack (a light tap on the pan will release the little cakes easily)
Wash, dry & re-grease the pan for the remaining batter
Once the cakes are cooled sprinkle with powdered sugar