Cook the rotini pasta in your pressure cooker with water for the broth depth for about 4 minutes under high pressure.
Once done, do a quick release. Drain and rinse pasta under cold water.
Chop broccoli into bite-size pieces and dice red onion.
Cook bacon till crisp and crumble it into small pieces.
In a big bowl, mix pasta, broccoli, onion, and bacon. Whisk mayo, vinegar, sugar, salt, and pepper to create dressing. Toss all together with the dressing and refrigerate for at least 30 minutes before serving.
Notes
Serve chilled. Consider adding chopped pecans or halved red grapes for extra flavor.