Using your knife, slice each chicken breast through lengthwise from the thick end all the way to the thin end to create two chicken cutlets. You should have 6 when finished with this step.
Heat skillet over medium-high heat and add avocado oil. Season both sides of chicken with salt and pepper. Once oil is hot, add chicken to skillet and sear on both sides until chicken is cooked through, about 4 minutes per side. Once chicken is fully cooked, remove from skillet and set aside.
Add garlic to the skillet. Cook for about a minute. Next, add bone broth and simmer until broth thickens and reduces by half, about 7 to 8 minutes.
Once broth has thickened, add mustard and combine. Next, add almond milk. Taste your sauce to make sure it is flavorful, add salt and pepper if necessary.
Lastly, add the chicken back in the skillet and make sure chicken is coated with sauce.
Serve and enjoy!!
