Slow Cooker Garlic Butter Steak and Potatoes Recipe

This Slow Cooker Garlic Butter Steak and Potatoes recipe features fork-tender sirloin, flavorful baby honey gold potatoes, slow-cooked in Worcestershire sauce, garlic, onion soup mix, butter, and beef broth. I make this on hectic weekdays when I can just throw everything into the slow cooker and come home to dinner already done (and smelling amazing). I’ll add a side salad or some crusty bread to soak up that butter sauce.

I’ve made this more times than I can count, and the biggest game-changer was keeping the full 8 tablespoons of butter. I tried cutting it back once and lost all the richness. The first time I made it, the flavors tasted flat until I realized I hadn’t let it cook for the full 8 hours. Low and slow is the best way with this recipe.

Prep TimeCook TimeServingsPrep Level
5 minutes8 hours on low heat6Beginner +


 
A ceramic plate filled with tender pieces of sirloin steak and whole golden potatoes, some potatoes split open, sitting on a wooden table with herbs and bread rolls in the background.

Ingredient Notes

Here’s what you’ll need to make this cozy, one-pot steak and potatoes dinner.

  • Sirloin steak: Top sirloin works best for this recipe because it’s lean and won’t turn greasy, but has enough marbling that it will get nice and tender when it cooks. Cut it into one-inch bites so each piece cooks evenly.
  • Baby Honey Gold potatoes: The thin skin and waxy texture hold up well through the long cook time and then turn buttery-soft without falling apart. If you can only find larger Honey Golds, halve them and add an extra ¼ cup of broth to compensate.
  • Worcestershire sauce: Don’t skip this because it adds a little bite to it and a little acidity that cuts through the richness with the butter.
  • Minced garlic: You can use fresh or jarred. When it cooks for 8 hours, it will mellow out and won’t stay too sharp.
  • Dried onion soup mix: This packet is doing a lot of the seasoning work, so be sure to test the flavor after cooking before you add any salt.
  • Beef broth: Keeps everything moist and creates the base of the sauce. Use low-sodium if you want more control over saltiness since the soup mix is already salty.
  • Butter: Melts down into the broth and gives it that rich flavor rather than a watery one.

Full printable recipe card with measurements and instructions listed at the bottom of the post. 

If you like the onion soup mix flavors and want a different protein, give this 5-ingredient Crock Pot Mississippi Chicken a try.

A close-up of a plate filled with tender chunks of beef and halved yellow potatoes, all cooked and slightly glistening, set on a wooden surface.

Step-By-Step Instructions

Start by adding your sirloin steak and potatoes to the slow cooker. Next, add the Worcestershire sauce, minced garlic, packet of onion soup mix, and beef broth.

Place the stick of butter on top and close the lid.

A slow cooker filled with whole baby potatoes, chunks of meat, and a rich broth, with visible herbs and seasonings.

Cook on low for 8 hours. You’ll know it’s done when a fork slides through the potatoes without resistance and the steak pulls apart easily with a spoon (you won’t even need a knife). Don’t rush it, because stopping the cooking early is the most common reason the potatoes come out firm.

Julie’s Tips From The Kitchen

Optional: If you want a rich, caramelized crust on the meat, sear it on all sides in a skillet with a tablespoon of butter before adding it to the slow cooker.

To make gravy from the Crock Pot juices, melt two tablespoons of butter in a saucepan over medium heat. Stir in two tablespoons of all-purpose flour—it’ll look lumpy at first. Slowly whisk in the cooking liquid and let it simmer until smooth and thickened.

I purchased the steak bites in smaller chunks to save time, instead of cutting them at home. Most meat counters will do this for you at no extra charge.

Add a dipping sauce on the side. Horseradish cream sauce is my favorite dip for this because the heat and tang cut right through the butter’s richness, making the whole dish taste more balanced.

A bowl of pot roast with chunks of tender beef, golden potatoes, and rich brown gravy, served on a wooden table with sprigs of fresh rosemary nearby.

Storage, Freezing, And Reheating Instructions

Store any leftovers in an airtight container and keep them in the refrigerator. To reheat, place the steak and potatoes in a covered skillet or saucepan with a splash of broth or water, and warm over medium-low heat until heated through. You can also microwave it in 1-minute intervals, stirring in between, until hot.

You can freeze the steak and potatoes for up to three months. Allow the dinner to cool and then place it in an airtight container or freezer bag and freeze. When ready to use, thaw it in the refrigerator overnight.

A bowl filled with tender chunks of pot roast and whole golden potatoes, garnished with herbs, sits on a wooden table next to sprigs of rosemary.

More Delicious Beefy Slow Cooker Meals

If you love this recipe, these three follow the same easy dump-and-go method with beef at the center.

    A bowl filled with tender chunks of sirloin steak and whole golden potatoes, garnished with herbs, sits on a wooden table next to sprigs of rosemary.

    Slow Cooker Garlic Butter Steak and Potatoes Recipe

    4 from 1 vote
    Slow cooker garlic butter steak and potatoes recipe features tender sirloin, baby gold potatoes, and plenty of seasoning for a dinner that is dump and go easy.
    Prep Time 5 minutes
    Cook Time 8 hours
    Total Time 8 hours 5 minutes
    Course Main Dishes
    Cuisine American
    Servings 6
    Calories 474 kcal

    Ingredients
      

    • 2 pounds sirloin steak cut into 1-inch bites
    • 2 pounds baby Honey Gold potatoes
    • 1 Tablespoon Worcestershire sauce
    • ½ Tablespoon minced garlic
    • 1 ounce dry onion soup mix packet
    • 1 cup beef broth
    • 8 Tablespoons butter

    Instructions
     

    • Add the steak, potatoes, Worcestershire sauce, and garlic to a slow cooker.
    • Next, sprinkle the onion soup mix over the top. Pour the beef broth over the stew.
    • Place the stick of butter on top and cover with the lid. Cook on the low heat setting for 8 hours.

    Video

    Notes

    Nutrition is approximate. 

    Nutrition

    Serving: 1Calories: 474kcalCarbohydrates: 30gProtein: 37gFat: 22gSaturated Fat: 12gPolyunsaturated Fat: 1gMonounsaturated Fat: 7gTrans Fat: 1gCholesterol: 132mgSodium: 780mgPotassium: 1239mgFiber: 4gSugar: 2gVitamin A: 473IUVitamin C: 31mgCalcium: 78mgIron: 4mg
    Tried this recipe?Let us know how it was!

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    4 from 1 vote

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    8 Comments

    1. can you use other types of steak such as a ribeye?

      1. I haven’t tried it, but you definitely can. It might not come out as tender, but it will still be delish!

    2. Looking at the picture, it looks awful greasy. What happens if you leave out the butter or just decrease it.

      1. Hi BJ,

        You can either decrease it or leave the butter out. It will still taste great!

    3. 4 stars
      This is a good recipe except seasoning, I added salt and pepper to the meat, and cut up some bell peppers and onions on the meat before I added the garlic, soup mix and Worcestershire sauce, I really like the potatoes, I mashed them up added milk and sour cream, then made a gravy from the sauce. It is very bland without seasonings.

      1. Wow, those sound like great tweaks! I love it and thank you for sharing so we can try it. The way you made the gravy sounds amazing!

      1. Hi Nu,

        If you scroll to the bottom of the post, you will find the recipe card with all the instructions and ingredients. Hope you love it!