Slow Cooker Onion Soup Corned Beef
If you’re looking for a simple slow cooker corned beef recipe that delivers tender, melt-in-your-mouth meat with rich onion flavor, this 4-ingredient slow cooker corned beef with onion soup mix is perfect. It’s easy to make, cozy, and family-approved, ideal for Sunday dinners, busy weeknights, or St. Patrick’s Day meals.
Benefits:
- One-pot cooking: Minimal cleanup, maximum flavor.
- High-protein meal: Corned beef is packed with protein to keep you full.
- Nutritious sides included: Potatoes soak up savory juices for a comforting, balanced meal.
- Versatile leftovers: Great for sandwiches, hash, or reheated dinners.
Ingredients (Serves 6)
- 3–3.5 lb corned beef brisket with seasoning packet, rinsed and patted dry
- 1 (1 oz) packet dry onion soup mix
- 1.5–2 lb small potatoes, scrubbed and quartered
- 2 cups low-sodium beef broth or water
Instructions
- Prep the potatoes: Place quartered potatoes in an even layer in the bottom of a 6-quart slow cooker. This allows them to soak up all the savory juices.
- Add the corned beef: Set the brisket on top of the potatoes, fat side up. Sprinkle the seasoning packet from the brisket evenly over the meat.
- Add onion flavor: Sprinkle the dry onion soup mix over the corned beef, letting some fall onto the potatoes for deep, rich onion flavor.
- Pour the broth: Carefully pour beef broth or water around the edges of the meat, reaching about halfway up the sides. Avoid washing the seasoning off the top.
- Cook low and slow: Cover and cook on LOW for 8–10 hours or HIGH for 4–5 hours, until the corned beef is fork-tender and potatoes are soft.
- Rest and slice: Carefully lift the corned beef onto a cutting board and let it rest for 5–10 minutes. Slice or shred against the grain.
- Serve cozy: Stir the potatoes in the flavorful juices, return the meat on top, and spoon oniony broth over everything. Serve warm with steamed vegetables, a green salad, or crusty bread.
Tips & Variations
- Add carrots or cabbage for extra nutrition and flavor.
- For a slightly sweeter roast, sprinkle 1–2 tbsp brown sugar over the meat before cooking.
- Use water instead of broth for a lighter version, or low-sodium corned beef for a heart-healthy option.
- Stir in Dijon or grainy mustard in the last hour for tangy richness.
- Leftovers keep 3–4 days in the fridge and make amazing sandwiches or a corned beef hash.
