Preheat your oven to 400 degrees F.
Cook Steak Black Bean Bowls according to package directions.
While bowl are cooking, scrape the insides of your squash out into a mixing bowl (See notes below if you are unsure to prepare your squash)
Place the spaghetti squash shells on a baking sheet.
Once your bowls are done cooking, add them to the bowl with your spaghetti squash and mix well.
Evenly divide the mixture between the 4 empty spaghetti squash rinds.
Top with shredded cheese and red onion.
Place the baking sheet into the oven and bake for about 10 minutes or until cheese is melted.
Finish off with fresh cilantro, if desired.