Cook Pasta: Bring a large pot of water to a boil and add the kosher salt. Cook the pasta according to the package directions until tender but still firm enough to hold its shape.
1 tablespoon kosher salt, 1 pound short pasta
Cool Pasta: Drain the pasta, then rinse it well under cold water. Let it drain again so the salad does not turn watery.
Cook Bacon: While the pasta cools, cook the bacon in a skillet over medium heat until crisp. Drain it well, let it cool slightly, then crumble it into bite-size pieces.
8 ounces bacon
Cook Peas: Cook the frozen peas according to the package directions. Drain them if needed, then let them cool before adding them to the salad.
1 cup frozen peas
Prepare Vegetables: Drain the corn, finely dice the green bell pepper, chop the celery, and finely dice the red onion.
1 cup canned corn, 1 green bell pepper, 1 celery stalk, 1 small red onion
Mix Salad: Add the cooled pasta, crumbled bacon, peas, corn, green bell pepper, celery, red onion, and shredded cheese to a large mixing bowl.
4 ounces shredded cheddar cheese or Monterey Jack cheese
Add Dressing: Pour in the ranch dressing and gently stir until everything is evenly coated. Add a little extra ranch if the pasta looks dry.
3 cups ranch dressing
Chill Salad: Cover the bowl and refrigerate the pasta salad for at least 2 hours. This gives the flavors time to blend and makes the salad taste much better.
Serve: Stir the pasta salad before serving. Add more ranch dressing if needed, especially if the pasta soaked up some of the dressing while chilling.