Preheat oven to 425 degrees Fahrenheit. Toss cauliflower pieces
with olive oil, salt and pepper. Arrange on a baking sheet and roast
for 30-45 minutes until deeply caramelized.
Heat 1 tablespoon olive oil in a medium pot over medium high heat.
Sauté onions and garlic with a pinch of salt for about 5 minutes,
until the onions are soft. Then add spices and tomato paste, sauté
for about 1 minute. Then add vegetable broth and lentils. Cook for
about 20-30 minutes, until lentils are soft. Add more liquid, if
necessary, drain any excess liquid when done.
To prepare the chipotle sauce, mix all ingredients for the sauce
together.
Warm tortillas individually in a pan over medium heat.
Assemble tacos using warmed tortilla with lentil mixture,
cauliflower, a drizzle of chipotle sauce, and chopped cilantro on top.