Tender, flavorful, and incredibly easy to prepare, this Slow Cooker 5-Ingredient Amish Mustard Beef is the kind of comforting dinner that makes the whole kitchen smell amazing. With only five simple ingredients, you can create a rich, savory beef dish with a mild mustard flavor and a delicious gravy.
Serve it over mashed potatoes, egg noodles, or rice for a cozy family meal that feels like it has been simmering all day—because it has!
Why You’ll Love This Recipe
- Only 5 ingredients: Simple pantry staples make this recipe easy.
- Minimal preparation: Just season, mix, and let the slow cooker do the work.
- Tender beef: Slow cooking helps tougher cuts become fork-tender.
- Rich mustard gravy: The mustard adds a pleasant tang without overpowering the beef.
- Perfect for busy days: Start it in the morning and enjoy dinner later.
- Family-friendly comfort food: Serve it with potatoes, noodles, or vegetables.
Ingredients
Main Ingredients
- 2 pounds beef chuck roast or stew meat, cut into large chunks
- 1 medium onion, thinly sliced
- 1/3 cup yellow mustard
- 1 cup beef broth
- 1 packet dry onion soup mix
Optional salt and black pepper may be added to taste, but the five ingredients above create the main recipe.
Step-by-Step Instructions
1. Prepare the Beef
Pat the beef dry with paper towels. If using a chuck roast, cut it into large, even pieces so it cooks evenly.
Season lightly with salt and pepper if desired. Keep in mind that the onion soup mix already contains seasoning.
2. Add the Ingredients to the Slow Cooker
Place the sliced onion in the bottom of the slow cooker. Add the beef on top.
In a small bowl, whisk together the yellow mustard, beef broth, and dry onion soup mix until well combined.
Pour the mustard mixture over the beef and onions.
3. Cook Until Tender
Cover the slow cooker with the lid.
Cook on:
- LOW for 7–8 hours, or
- HIGH for 4–5 hours
The beef is ready when it is very tender and easily pulls apart with a fork. Cooking time may vary depending on the size of the beef pieces and your slow cooker.
4. Stir and Serve
Carefully stir the beef into the mustard gravy. Taste and adjust the seasoning if needed.
Serve hot over mashed potatoes, egg noodles, rice, or buttered noodles.
Helpful Tips
Use Chuck Roast for the Best Texture
Beef chuck roast is an excellent choice because it contains enough connective tissue and marbling to stay moist during long cooking. Stew meat also works well.
Do Not Add Too Much Liquid
The slow cooker traps moisture, so you do not need to completely cover the beef with broth. The onions and beef will also release liquid as they cook.
Add More Mustard for Extra Flavor
If you enjoy a stronger mustard taste, stir in an additional tablespoon of mustard during the final 30 minutes of cooking.
Make the Gravy Thicker
For a thicker gravy, mix:
- 1 tablespoon cornstarch
- 2 tablespoons cold water
Stir the mixture into the slow cooker during the final 20–30 minutes. Keep the slow cooker on HIGH until the gravy thickens.
Avoid Lifting the Lid Too Often
Every time you remove the lid, heat escapes and the cooking time increases. Try to keep the lid closed until the beef is nearly finished.
What to Serve With Mustard Beef
This rich and savory beef pairs beautifully with simple side dishes.
Mashed Potatoes
Creamy mashed potatoes are perfect for soaking up the mustard gravy.
Egg Noodles
Serve the beef and sauce over buttered egg noodles for a hearty, comforting dinner.
Steamed Vegetables
Green beans, broccoli, carrots, or peas add color and balance to the meal.
Dinner Rolls
Soft dinner rolls are ideal for scooping up every bit of the flavorful sauce.
Roasted Potatoes
Crispy roasted potatoes make a delicious contrast to the tender beef and creamy gravy.
Storage Instructions
Allow leftovers to cool slightly before transferring them to an airtight container.
Store in the refrigerator for up to 3–4 days.
For longer storage, place the cooled beef and gravy in a freezer-safe container. Freeze for up to 3 months for the best quality.
How to Reheat
On the Stovetop
Place the beef and gravy in a saucepan over medium-low heat. Add a small splash of beef broth or water if the sauce is too thick. Stir occasionally until heated through.
In the Microwave
Place a serving in a microwave-safe bowl. Cover loosely and heat in 60-second intervals, stirring between each interval.
In the Slow Cooker
For a larger amount, reheat on LOW until hot throughout. Avoid leaving leftovers at room temperature for long periods.
Frequently Asked Questions
Can I use another cut of beef?
Yes. Chuck roast, beef stew meat, shoulder roast, or round roast can work. Chuck roast usually gives the most tender and flavorful result.
Does this recipe taste strongly of mustard?
The mustard gives the beef a mild tangy flavor. The taste becomes more balanced as it cooks with the broth, onions, and beef.
Can I use Dijon mustard?
Yes. Dijon mustard can be used instead of yellow mustard for a slightly sharper and more sophisticated flavor.
Can I add mushrooms?
Absolutely. Add sliced mushrooms during the last 2–3 hours of cooking so they keep some texture.
Can I prepare this recipe the night before?
Yes. You can cut the beef and onions and mix the sauce ahead of time. Store everything covered in the refrigerator, then place it in the slow cooker when ready to cook.
How do I know when the beef is done?
The beef should be fork-tender and easy to pull apart. For the best texture, cook until the connective tissue has softened rather than relying only on the clock.
Recipe Card
Slow Cooker 5-Ingredient Amish Mustard Beef
Prep Time: 10 minutes Cook Time: 7–8 hours on LOW Total Time: About 8 hours 10 minutes Servings: 6 Category: Dinner Method: Slow Cooker Cuisine: American Comfort Food
Ingredients
- 2 pounds beef chuck roast or stew meat, cut into chunks
- 1 medium onion, sliced
- 1/3 cup yellow mustard
- 1 cup beef broth
- 1 packet dry onion soup mix
- Optional salt and black pepper
Directions
- Place the sliced onion in the bottom of the slow cooker.
- Add the beef chunks on top of the onions.
- Whisk together the mustard, beef broth, and onion soup mix.
- Pour the mixture over the beef.
- Cover and cook on LOW for 7–8 hours or HIGH for 4–5 hours.
- Cook until the beef is fork-tender.
- Stir the beef into the gravy and serve over mashed potatoes, noodles, or rice.
Final Thoughts
This Slow Cooker 5-Ingredient Amish Mustard Beef is a simple, satisfying meal made for busy families and cozy evenings. The beef becomes tender, the onions add sweetness, and the mustard creates a flavorful gravy with very little effort.
When you need an easy dinner that tastes homemade and comforting, this slow cooker beef recipe is a delicious choice.