To a small mixing bowl, add hummus, spicy mustard, lemon zest + juice, minced capers + brining juice, and minced garlic, and whisk thoroughly to combine. Olive oil is optional, but will add a bit more creaminess.
Add a little hot water to thin until pourable and whisk until creamy and smooth (see photo). Taste and adjust flavor as needed, adding more salt and pepper, lemon juice, or minced garlic if desired! Maple syrup will help offset how salty and briney this dressing is, if you find you need it (I did not).
Use immediately, or store in the refrigerator up to 5-7 days.
This dressing is delicious on kale, romaine, and arugula. It would also be great on roasted vegetables, especially Brussels sprouts and potatoes. Top with a little vegan parmesan cheese for the ultimate Caesar salad experience.
*Nutrition information is a rough estimate. *Recipe makes ~1/2 cup dressing.