In a small bowl, combine the freshly squeezed lemon juice, lemon zest, extra virgin olive oil, black pepper, salt, honey, and whole grain mustard. Whisk until all ingredients are well combined. The honey helps balance out the tartness from the lemon, and the mustard adds a touch of depth to the flavor.
Taste your dressing and adjust seasoning if needed. Add a little more honey for sweetness or a bit more salt for extra flavor. If you prefer a tangier dressing, add a bit more lemon juice or zest.
Let the dressing sit while you prepare the salad. This allows the flavors to meld together beautifully.
Rinse the fresh arugula and spinach in cold water. A salad spinner works best to ensure the greens are dry, but if you don’t have one, gently pat them dry with paper towels.
In a large salad bowl, toss together the arugula, spinach, shaved Parmesan, and halved cherry tomatoes. The Parmesan adds a creamy, savory touch, while the tomatoes bring a burst of juiciness.
Pour the lemon dressing over the salad.
Gently toss the salad until all the greens and toppings are evenly coated in the dressing. Be sure not to over-toss—just enough to mix everything lightly without bruising the delicate spinach and arugula.
This salad is best served fresh, right after tossing. It makes an excellent side dish to grilled chicken, roasted vegetables, or seafood. You could also enjoy it as a light, refreshing main dish if you're looking for something quick and healthy!