Bring a large pot of salted water to a rolling boil. Add the salad macaroni or ditalini pasta and cook according to package instructions, typically for 8-10 minutes, until al dente. Stir occasionally to prevent sticking. Once cooked, you should see the pasta slightly firm when bitten.

About 30 seconds before the pasta is done, add the tiny broccoli florets directly into the boiling water. This allows the broccoli to brighten and soften while retaining a bit of crunch. After the time is up, turn off the heat—your pasta and broccoli are ready to come out together.

Carefully pour the contents of the pot into a colander, allowing the water to drain completely. Immediately rinse the pasta and broccoli under cold running water—this stops the cooking process and cools them down. You want the pasta to be set aside until it’s fully cooled to room temperature.

In a large mixing bowl, combine the mayonnaise, vinegar, kosher salt, freshly ground black pepper, and sugar. Stir well with a whisk or spoon until the dressing is smooth and all ingredients are incorporated. You should notice the tangy aroma already becoming inviting as the flavors meld.

Add the drained pasta and broccoli into the bowl with the dressing. Toss gently but thoroughly with a spatula until every piece is evenly coated in that creamy goodness. The vibrant colors of the salad should begin to shine, announcing a delicious outcome ahead.

Now, mix in the diced cucumber, finely diced red pepper, sliced black olives, and thinly sliced green onion. Gently fold everything together, making sure the dressing continues to embrace each ingredient. Taste the salad at this stage to see if you want to adjust the seasonings with extra salt or pepper.

Cover the mixing bowl with plastic wrap or serve it in an airtight container, and refrigerate for at least 30 minutes to allow the flavors to meld beautifully. This resting period is crucial as it elevates your creamy summer pasta salad from good to absolutely delightful.

When you’re ready to serve, stir the salad one last time to redistribute the dressing. Transfer it to a lovely serving dish, and enjoy the creamy, crunchy, and colorful explosion of flavors. It's perfect as a side for summer barbecues or as a refreshing light lunch!