In a large skillet, heat the avocado oil over medium heat.
Add the chopped red onion and sauté for about 3-4 minutes until it becomes translucent. Then, stir in the minced garlic and cook for an additional minute, until fragrant.
Increase the heat slightly and add the grass-fed ground beef to the skillet. Break it apart with your wooden spoon and cook until browned, about 5-7 minutes. Season with sea salt, dried oregano, paprika, and nutmeg, stirring to combine.
Once the beef is cooked, add the chopped red bell pepper and rainbow chard to the skillet. Sauté for another 3-4 minutes, allowing the chard to wilt and the bell pepper to soften.
Stir in the wild rice, making sure to coat it in the seasoned beef mixture.
Add the beef or chicken broth to the skillet and bring to a gentle boil. Reduce the heat to low, cover, and let it simmer for about 40-45 minutes, or until the wild rice is tender and has absorbed most of the liquid.
Once the rice is cooked, remove the skillet from heat and fluff the mixture with a fork. Taste and adjust seasoning if necessary before serving.