This skirt steak in crock pot recipe turns out so tender, with a rich, creamy mushroom gravy coating every bite of this easy crockpot skirt steak dinner.
Pour the soup mixture over the mushrooms and steak, then cover with the lid.
Cook on LOW for 5 hours or HIGH for 4 hours, until the steak is fork tender.
Notes
Make Ahead: Mix the soup and onion soup mix together the night before, and slice the mushrooms, keeping both in separate containers in the fridge. The next morning, add the steak, mushrooms, and soup mixture to your crock pot.
Storage: Refrigerate leftovers in an airtight container for up to 4 days.
Reheating: Warm gently in the oven at 300 degrees Fahrenheit or in the microwave. Add a splash of broth if the gravy has thickened.
Freezing: Freeze for up to 3 months. Thaw in the fridge overnight before reheating.
Substitutions: Flank steak works in place of skirt steak if needed; it's a bit leaner, so slice it thin against the grain after cooking. Baby bella, shiitake, portobello, or morel mushrooms can replace white mushrooms, on their own or mixed together.
Variations: Add carrots or pearl onions along with the mushrooms. A splash of Worcestershire sauce deepens the gravy's flavor. Double the soup mixture and mushrooms for extra sauce.