HEAT a large skillet over medium heat or use your Instant Pot set to Sauté. Add the ground beef. If you are using the stove or Instant Pot, also add the diced onion, minced garlic, and chopped jalapenos. Cook for 10 minutes, until the meat is browned and the veggies are tender.
STOVE: Add broth, tomatoes, nutritional yeast, and taco seasoning. Bring to a boil and simmer for 10 minutes. While the soup is simmering, use a high-powered blender to blend the steamed cauliflower with the coconut milk until very smooth—mixture should not be lumpy. Add to the soup, stirring until well combined.
INSTANT POT: Add broth, tomatoes, nutritional yeast, and taco seasoning. Seal Instant Pot and cook on manual (high) for 10 minutes. While the soup is cooking, blend the steamed cauliflower with the coconut milk in a high-powered blender. Blend until very smooth; this should not be lumpy. Manually release the steam when the 10-minute cook time is done. Add the cauliflower mixture to the soup, stirring until well combined.
CROCKPOT: Add the cooked ground beef, diced onion, minced garlic, chopped jalapenos, broth, tomatoes, nutritional yeast, and taco seasoning. Seal the crockpot and cook on high for 4 hours or low for 8 hours. In a high-powered blender, blend the steamed cauliflower with the coconut milk. Blend until very smooth; this should not be lumpy. Add the cauliflower mixture to the soup, stirring until well combined.
SERVE topped with chopped cilantro, additional jalapenos (if you like it spicy), and diced avocado, if desired. Add additional salt to taste, as the salt content in every taco seasoning will vary. Want more flavor? Add up to an additional 1 tablespoon of taco seasoning.
FREEZE (optional) once soup has cooled in a sealed container for up to 3 months.