In a bowl, combine the flour, baking powder, melted white chocolate, cashew butter, oil, maple, milk, vanilla and salt. Whisk together. Transfer the cake batter into a piping bag.
In the microwave, melt the white chocolate chips. Once they are melted, transfer the melted chocolate in two mini muffin liners and place in the freezer until they solidify.
Grab two small ramekins. Generously grease each cup with coconut oil. Then add 1 tablespoon of flour to each cup and shake the cup around so that the whole cup is covered in a thin layer of flour. This will help the cake to not stick to the cup and it's important to making sure your cake doesn't fall apart.
Pipe ¼ of the batter into each ramekin. Place the solidified white chocolate cup on top. Pipe the rest of the cake batter on top of the white chocolate. Make sure the white chocolate cup is fully covered in batter.
Bake the cups at 350F for 15-17 minutes.
Remove from oven and allow the cups to cool off for a few minutes so you don't burn yourself. Place a small plate on top of each ramekin, then flip the ramekin upside down. Gently lift the ramekin up to reveal your lava cake.
Top the lava cake with powdered sugar and berries, then dig in!