Place the cauliflower and potatoes in a medium saucepan with cold water (about 1-inch). Add a pinch of salt and bring to boil. Reduce heat and let simmer uncovered until fork tender. Takes 8-10 minutes. Drain and let cool.
Using a blender put water, apple cider vinegar, olive oil, chipolte, garlic, onion powder, and salt. Blend until smooth.
Take the cauliflower and potato and mix the chipolte sauce well. Place tortilla chips on baking sheet. Add the cauliflower/potato mix. Top with black beans cheese, red onion. Broil until cheese melted. Once out top with grape tomatoes and cilantro. Serve immediately.
Preheat oven to broil
Take the diced potatoes and place in small saucepan, cover with water and a dash of salt. Bring to boil. Keep an eye out until they are tender. I use a fork to do this. Drain and set aside.
While the potatoes are cooking do the rest of prep.
Take the can of chipoltes and chop 3 peppers. When the potatoes are done add sauce and the peppers to the potatoes and mix well. Take the 1/2 onion and mix with potatoes. You can adjust your heat level to what your preference is.
Use parchment and place on a baking sheet. Lay the tortillas out. Place the potato mixture on the tortillas. Add the green onions. Add the cheese. I mixed all these together with my hands because I like my nachos to be well covered.
Put nachos in oven and cook 5-10 minutes until cheese melted.
Top nachos with the tomato, green onions, cilantro. Dollop with sour cream and salsa.
One of the great things about nachos is you can make it to your preference. I didn't have an avocado but this would have been wonderful with some that or guacamole.