Using the same skillet, reduce the heat to medium and add 1 tablespoon avocado oil.
Saute the sliced onions and minced garlic for 1-2 minutes, just until the onions start to soften and the garlic is fragrant. Then add the sliced bell peppers and continue to sauté for an additional 2-3 minutes, until it reaches desired doneness. Remove from the heat and set aside.
Once the steak has finished resting, slice it into strips or chop it into bite sized pieces. Mix it in with the sautéed onions and bell peppers.