Place all ingredients in food processor. Blend until smooth.
To Make Burgers:
Form burger patties with taco seasoning. Place on oven top grill or outside grill. Cook until meat temperature is what you like.
Place a little olive oil in saucepan. Add onions and caramelize, about 8-10 minutes. Add chipotle sauce and mix until well combined. Take off heat.
Start by forming burgers. Place 1 Tbsp. avocado ranch dressing on one bun. Place burger on top. Then add cheese, onions, tomato, and lettuce. Top with other bun.