Put squash in boiling water. Add salt and pepper to water (add accordingly). Boil for 10-12 minutes.
Preheat oven 350 degrees.
In a large mixing bowl, add stuffing, onions, cream of mushroom, sour cream, jalepenos. In a small bowl, mix 1 bouillon cube with enough water that it dissolves well. Add bouillon mixture to the other ingredients. Finally, add the cheese by the handful. Make sure the mixture blends smoothly.
Smash up the squash and drain most of the juices that are released from the squash. Add to other ingredients and mix.
Pour mixture into a large pre-greased (spray with cooking spray) baking tray and spread evenly.
Pour enough breadcrumbs to cover entire mixture.
Put in oven for 25 minutes. All cheese should be melted.