Answer by  
                                                                                          mmm (35)
                                                            
                          
                          
                                                          Here is how to ripen a butternut squash. You can place the squash in a brown paper grocery sack and put it in a garage, pantry, or other cool area. The squash will ripen in several days. Even after they are ripe, they will be good for several months if stored in a cool, dry place.