Tender, savory, and full of comforting homemade flavor, this Crockpot Pepper Steak is an easy weeknight dinner that features sirloin cooked in a soy and brown sugar-based sauce with bell peppers and onions.
For thicker sauce, simmer the liquid on the stovetop with cornstarch slurry after cooking. Store leftovers in an airtight container for up to 3–4 days in the refrigerator.