Pour the cake batter into each ramekin or mold. Then, pour the flan mixture on top, it will look messy, but don’t worry, that’s how it’s supposed to be! Place the ramekins in a large pan or baking dish. Pour hot water into the dish up to halfway the height of the molds. Cover the dish with aluminum foil and seal.
Place the in the oven and bake for about 50 to 55 minutes, or until the surface of each cake feels solid, looks baked and a wooden toothpick comes out moist but not wet.
Remove from the oven. Be careful when you open the aluminum foil as the steam will be very hot. Once cool enough to handle, remove the ramekins out of the water bath. Once cool, cover with plastic and refrigerate at least 2 hours before eating.
When ready to serve, run the tip of a knife around the ramekin and place it cake-side down onto a plate. Lift the mold up. Drizzle with any cajeta from the mold and decorate with chopped pecans.