There are so many delicious sides that go perfectly with this herb butter steak. For keto, stick to these low-carb sides: Thyme Roasted Radishes & Onions or Lemony Prosciutto Wrapped Asparagus. If you're Whole30 try: Potatoes Au Gratin, Watermelon Cucumber Salad, Broccoli Cauliflower Salad, or Everything Roasted Potatoes.