Bring a large pot of salted water to a boil and cook the rotini according to package directions until al dente. Drain the pasta in a colander, then rinse thoroughly with cold water while tossing gently to remove excess starch and cool it completely. This prevents the pasta from sticking together and ensures it won't continue cooking from residual heat.
While the pasta cools, prepare all your vegetables: peel and slice the cucumbers into 1/2-inch half-moons, shred the carrots, halve the cherry tomatoes lengthwise, cut the broccoli into small florets, and finely dice the red onion. I find it helpful to cut the tomatoes last so they don't release too much liquid and make everything watery before we mix everything together.
In a large mixing bowl, combine the cooled pasta from Step 1 with all the prepared vegetables from Step 2. Pour the ranch dressing over everything and sprinkle in the smoked paprika. Toss thoroughly until all ingredients are well coated and evenly distributed. The smoked paprika adds a subtle depth that elevates the dressing beyond basic ranch—I always add it for that extra layer of flavor.
Taste the salad and adjust seasoning with salt and freshly cracked black pepper to your preference. Remember that the ranch dressing already contains salt, so add gradually and taste as you go. Toss once more to ensure the seasonings are evenly distributed, then serve immediately or refrigerate until ready to serve.