Beef chuck steak with onions and peppers

I made this: http://www.geniuskitchen.com/recipe/beef-chuck-steak-w-onions-peppers-290970

Except I seasoned the steak with Montreal Steak Seasoning, then at the stir fry step used dried herbs instead of the fresh recommended in the comments (parsley, some herbs de provence, white pepper, mustard powder). Then to keto-ify it, we used xanthan gum instead of cornstarch. Turned out pretty tasty and tender!

Made alongside cauliflower mash. Got it to be mashed potatoes texture -- has to be the perfect boiled amount. Stems are soft but not mushy. Then used an immersion blender -- worked great!