Heat your cast iron skillet over medium heat.
Add the avocado oil and onions, sauté the onions until soft and turning golden, stirring occasionally. About 5 minutes.
1 tablespoon avocado oil, 1 yellow onion
Add the ground beef, and break up with a potato masher.
1 pound ground beef
When the ground beef is about half way cooked, add in the frozen cauliflower rice straight from frozen. The cauliflower rice will thaw, and add more moisture to the ground beef as it is thawing. Stir to combine and cook until the meat is cooked through and brown and the cauliflower rice is thawed and has absorbed all the moisture and flavor of the beef, stirring occasionally. About 10 minutes.
1 12-ounce bag of frozen cauliflower rice
Add the taco seasoning and tomato paste. Stir to combine and cook until fragrant and fully combined. About 5 minutes.
4 tablespoons taco seasoning, 1 tablespoon tomato paste
Serve warm.
Will keep in an airtight container refrigerated for 5 days, or frozen for 6 months.
See the Recipe Notes below for more tips, FAQ's and ingredient substitutions.