Preheat the oven to 350 degrees.
Prepare a large baking pan (mine is a round one, about 11 inches in diameter, but a rectangular 9 X 13 inch pan would be fine).
Mix the flour with the baking soda, baking powder and salt in a bowl and set aside.
Mix the nondairy milk and apple cider vinegar and set aside to curdle.
In a large bowl or the bowl of a stand mixer, beat the sugar with the oil and applesauce using the whisk attachment until everything is well mixed, about a minute. Add the aquafaba and beat on medium-high speed for another two minutes. The mixture will look curdled but don't worry.
Add the vanilla and nondairy milk to the bowl, mix, and then add the flour in three batches. Make sure everything is mixed well and scrape down the sides and bottom of the bowl after each addition.
Pour half the batter into the prepared pan. Sprinkle the cinnamon filling over the batter and use a knife to gently swirl it into the batter. Now pour the remaining batter over the top of the filling. Scatter the prepared streusel over the top evenly.
Bake the cake in the preheated oven for 50-55 minutes or until a toothpick inserted in the center comes out clean or with crumbs sticking to it.
Remove the cake from the rack and allow it to cool.