Preheat the oven to 375 F.
Pour 1/2 cup of the enchilidas sauce onto the bottom of the baking pan and spread to even.
One at a time, place 1/3 of a cup of black beans into each tortilla.
Spread into a line down the middle, then roll into a tube.
Place the enchiladas seam side down in the pan until finished.
Pour the rest of the sauce over the top of the enchilladas.
Grate the cheese, then spread over top of the sauce evenly.
Place the finished pan in the oven for 10 min, then broil for an additional 5 minutes.