Making Cauliflower Potato Salad is straightforward. Follow these steps to create this delicious dish:

1. Prepare the Vegetables: Clean and cut the cauliflower into florets. Dice the potatoes into even cubes.
2. Boil the Potatoes: In a pot, bring water to a boil and add diced potatoes. Cook for 7-10 minutes until fork-tender but not mushy. Drain and let cool.
3. Steam the Cauliflower: In a steam basket over boiling water, add the cauliflower florets. Steam for about 5-7 minutes until tender but still crisp. Allow to cool.
4. Mix the Salad: In a large bowl, combine the cooled cauliflower, potatoes, celery, bell pepper, and red onion.
5. Prepare the Dressing: In a small bowl, whisk together the mayonnaise, apple cider vinegar, Dijon mustard, salt, and pepper until smooth.
6. Combine: Pour the dressing over the vegetable mixture and gently toss to combine.
7. Taste and Adjust: Taste the salad and adjust seasonings if necessary.
8. Chill: Cover the salad and refrigerate for at least 30 minutes to let the flavors meld together.
9. Garnish and Serve: Before serving, garnish with fresh parsley or dill for an added touch of flavor.

With these simple steps, you will have a satisfying and flavorful Cauliflower Potato Salad ready to enjoy!