Preheat oven to 350 degrees F. Line a 9 inch baking pan with parchment paper, and grease the sides of the pan with coconut oil.
In a medium bowl, sift together the flour, baking powder, and salt. Set aside.
In a large mixing bowl cream together coconut oil, sugar, and vanilla using a hand or stand mixer.
Add one banana cut into slices. Cream together until combined and light and fluffy. Add the flour to the wet ingredients a little at a time, alternating with soy milk.
Add batter to the prepared cake pan and spread evenly across the top.
Slice and core apples into 8 pieces each or 16 pieces all together using an apple corer. Place apples in a circular pattern on top of the batter, lightly pressing the edges into the batter.
Combine cinnamon and ¼ cup of raw sugar in a small bowl. Sprinkle on top of the apples.
Allow the cake to cool in the pan on a wire rack for about 10-15 minutes. Run a thin, sharp knife or an offset spatula around the edges of the cake. Place a serving plate on top of the cake and flip it so that it releases from the pan. The will be upside down. Take another plate and flip it again; it will be right side up. Allow the cake to cool completely before slicing and serving.