Add steak, beef stock, garlic, ginger, coconut aminos, stevia, oil, and red pepper flakes into a small crock pot ( I used a 2 quart). Cook on low for 2-3 hours until meat is cooked.
Sprinkle in xanthan gum (or glucomannon) to thicken. Stir in broccoli florets and cook on low 30 minutes more.
Video
Notes
Sear steak first. This is optional, but it will lock the juices in the meat.Use a large enough slow cooker. I used a 2-quart slow cooker for this recipe.Add broccoli last. Don't add the florets until the last 30 minutes of cooking, so they don't overcook.