Slow Cooker Steak with Onion Soup Mix Recipe
This recipe is as easy as it is delicious. Toss the ingredients into the slow cooker, and let it do all the work. The result? Juicy, tender steak in a savory, flavorful sauce that pairs wonderfully with mashed potatoes, rice, or veggies.
Kitchen Equipment Needed
- Slow cooker
- Tongs
- Measuring cup
Ingredients Overview
- Steak: Use cuts like chuck steak, round steak, or sirloin for best results in the slow cooker.
- Onion Soup Mix: A convenient seasoning blend that adds depth of flavor.
- Liquid Base: Beef broth or water helps create a flavorful sauce while keeping the steak moist.
- Optional Additions: Mushrooms, garlic, or carrots for added flavor and texture.
Ingredients
- 2 lbs steak (chuck, sirloin, or round)
- 1 packet onion soup mix (1 oz)
- 1 cup beef broth (or water)
- 2 cloves garlic, minced (optional)
- 1 cup sliced mushrooms (optional)
- Salt and black pepper, to taste
Step-by-Step Instructions
- Prepare the Slow Cooker:
Spray the inside of your slow cooker with cooking spray or use a liner for easy cleanup. - Season the Steak:
Season the steak lightly with salt and black pepper on both sides. - Layer Ingredients:
Place the steak in the bottom of the slow cooker. Sprinkle the onion soup mix evenly over the steak. If using, add minced garlic and mushrooms on top. - Add Liquid:
Pour the beef broth or water over the steak to keep it moist and help create a flavorful sauce. - Cook:
Cover and cook on low for 6-8 hours or high for 3-4 hours, until the steak is fork-tender. - Serve:
Remove the steak carefully from the slow cooker, as it will be very tender. Serve with the sauce spooned over the top.
Recipe Tips
- Thicken the Sauce: For a thicker gravy, remove 1 cup of the liquid from the slow cooker, whisk in 1 tablespoon of cornstarch, and return it to the slow cooker. Let it simmer on high for 10-15 minutes until thickened.
- Add Veggies: Add carrots, potatoes, or green beans to the slow cooker for a complete one-pot meal.
- Brown the Steak: For extra flavor, sear the steak in a hot skillet before placing it in the slow cooker.
What to Serve With This Recipe
- Mashed Potatoes: The savory sauce is perfect for pouring over creamy mashed potatoes.
- Steamed Rice: A simple and fluffy side to soak up the delicious juices.
- Roasted Vegetables: Complement the richness of the steak with a lighter side.
Frequently Asked Questions
Can I use frozen steak?
Yes, but it’s best to thaw it first for even cooking. If using frozen steak, increase the cooking time by an hour.
What other cuts of meat work well?
Cuts like short ribs or brisket also work wonderfully in this recipe.
How do I store leftovers?
Store leftover steak and sauce in an airtight container in the fridge for up to 3 days. Reheat gently on the stovetop or microwave.
Serving Suggestions
- Serve with crusty bread to soak up the sauce.
- Garnish with fresh parsley or thyme for added color and flavor.
- Pair with a glass of red wine, like Cabernet Sauvignon or Merlot.
Ingredients
- 2 lbs steak
- 1 packet onion soup mix
- 1 cup beef broth or water
- Optional: garlic, mushrooms, carrots
Instructions
- Place steak in slow cooker and sprinkle with onion soup mix.
- Add broth, garlic, and mushrooms (if using).
- Cook on low for 6-8 hours or high for 3-4 hours.
- Serve warm with sauce over your favorite sides.

This recipe is as easy as it is delicious.
Equipment
- Slow cooker
- Tongs
- Measuring cup
Ingredients
- 2 lbs steak
- 1 packet onion soup mix
- 1 cup beef broth or water
- Optional: garlic mushrooms, carrots
Instructions
- Place steak in slow cooker and sprinkle with onion soup mix.
- Add broth, garlic, and mushrooms (if using).
- Cook on low for 6-8 hours or high for 3-4 hours.
- Serve warm with sauce over your favorite sides.
