While the water comes to a boil, prepare all your vegetables: dice the English cucumber into 1/2-inch pieces, seed and chop the tomato into 1/2-inch cubes, cut the artichoke hearts into 1-inch chunks, and chop your fresh herbs. Measure out the olives and set everything aside in separate bowls. This prep work ensures you won't be scrambling when the orzo finishes cooking, and it allows the warm pasta to absorb the dressing without interruption.
Bring a large pot of salted water to a rolling boil, then add the dry orzo and cook for 6-10 minutes until al dente—the pasta should have a slight firmness when you bite it, not mushy. Reserve about 1/4 cup of the starchy pasta water before draining (this can help loosen the dressing if needed), then drain the orzo thoroughly in a colander.
In a small bowl, whisk together the olive oil, Dijon mustard, honey, lemon zest, and lemon juice. The mustard acts as an emulsifier, creating a creamy vinaigrette that clings beautifully to the pasta. Season with salt, black pepper, and red pepper flakes, whisking until everything is well combined.
Pour the dressing from Step 3 over the hot orzo while it's still warm—this is crucial because warm pasta absorbs the dressing much better than cold pasta, creating deeper flavor throughout. Toss gently but thoroughly to coat every piece. Let the dressed orzo sit for about 5 minutes so the pasta continues to absorb the flavors. I like this resting period because it allows the starches to relax and really drink in that lemon and olive oil goodness.
Add the prepared cucumber, tomato, herbs, olives, and artichoke hearts from Step 1 to the dressed orzo. Gently fold everything together, being careful not to break up the vegetables. Taste and adjust the seasoning with additional salt and pepper as needed—remember that the pasta itself is already salted, so taste before adding too much more.
The salad can be served warm right away for a softer pasta texture, or you can refrigerate it for 30 minutes to 2 hours for a chilled version—both are delicious. If the salad seems a bit dry after chilling, drizzle with a touch more olive oil or the reserved pasta water and toss gently. Serve as a fresh side dish for your Easter meal or any spring gathering.