Make the dressing: In a small bowl, mix mustard, nutritional yeast, hummus and garlic, forming a paste.

Whisk in the water, lemon juice, soy sauce, olive oil and cayenne until thoroughly combined.

Set aside.

Make the salad: Combine kale, romaine and quinoa in a large bowl.

Toss with dressing.

Place into bowls and serve with sliced avocado.