Dinner · Part 2 of 3: Instructions
Slow Cooker Brown Sugar Dijon Steak Bites Step-by-step instructions

- Prep
- Cook
- Total
- Serves
- 4
Before you start
Start by gathering all necessary ingredients and preparing the beef. Thoroughly wash the mushrooms and slice them into uniform pieces to ensure even distribution in the slow cooker. Cut the beef into consistent 1-inch cubes, trimming any excess fat as needed. Have the onion soup mix packet and the Dijon mustard ready.
Ensure the slow cooker insert is clean and positioned on a stable, heat-resistant surface near a power outlet. Preparing these components in advance makes the assembly process very quick and efficient, allowing for a smooth transition into the actual cooking phase.
Ingredients at a glance (5)
- 1 1/2 lb beef steak, cut into 1-inch cubes
- 8 oz white mushrooms, sliced
- 1 packet onion soup mix
- 1/2 cup Dijon mustard
- 1/4 cup brown sugar
Instructions
Preparation and Assembly
- Layer the ingredientsPlace the cubed beef into the bottom of the slow cooker. Scatter the sliced mushrooms evenly over the beef. Sprinkle the dry onion soup mix over the top of the mushrooms.Look for The beef should be spread in a relatively even layer at the bottom of the slow cooker insert to ensure uniform cooking.Tip Ensure the beef cubes are roughly the same size to promote even cooking throughout the slow cooker.
At the end of this phase, the slow cooker should be filled with layers of beef, mushrooms, and the seasonings. The ingredients should be arranged to allow the sauce to penetrate the layers evenly during the cooking process. Ensure the lid is securely in place before you begin the heating cycle. Visually check that the beef cubes are distributed throughout the bottom of the cooker so that they are in direct contact with the heat source for the best results.
Slow Cooking
- Add sauce and cookWhisk together the Dijon mustard and brown sugar in a glass measuring cup until well combined. Pour this mixture over the contents of the slow cooker. Cover and cook on low for 4 to 6 hours or on high for 2 to 3 hours until the beef reaches 145°F (63°C). Let the meat rest for at least 3 minutes before serving.Look for The sauce will combine with the juices from the mushrooms and beef to create a glossy, flavorful glaze.Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)Tip Avoid lifting the lid frequently during the cooking process to maintain a consistent temperature inside the slow cooker.
During this phase, the beef should be simmering steadily in the sauce. You should notice the aroma of the onion soup and mustard developing in the kitchen. The beef will gradually turn opaque and tender as it absorbs the flavors of the brown sugar and Dijon.
Check that the liquid level is sufficient to keep the meat submerged or at least well-coated. The mushrooms will shrink and soften, releasing their own juices into the sauce, which helps to build a rich, savory foundation.
Resting and Final Presentation
- Rest and serveOnce the cooking time is complete, allow the steak bites to rest for at least 3 minutes before serving. This ensures the meat remains tender and juicy when plated.Look for The steak bites should look tender and coated in a thickened, glossy sauce.Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)Tip Serve immediately while the dish is warm to enjoy the best texture and flavor of the sauce.
By the end of this phase, the steak bites should be perfectly tender and coated in a thick, glossy, and flavorful sauce. The meat should be ready to be served, having rested for the required time. Before plating, give the mixture a gentle stir to ensure every piece is well-coated with the thickened sauce. The final appearance should be inviting, with the mushrooms and beef bites glistening, indicating they are ready to be served immediately while hot.
Common mistakes
A common mistake is overcrowding the slow cooker, which can prevent even cooking and lead to excess liquid that dilutes the flavor of the sauce. Another error is cutting the beef into uneven sizes, which results in some pieces becoming overcooked while others remain tough.
Avoid opening the lid too frequently, as this causes significant heat loss and extends the cooking time unnecessarily. Finally, ensure the steak is not cooked at too high a temperature for too long, as this can cause the meat to become dry instead of tender.
How to tell it’s done
The steak bites are considered done when the beef reaches an internal temperature of 145°F (63°C). At this stage, the meat should be tender and easily pierced with a fork. The sauce will have thickened into a glossy, dark glaze that coats the beef and mushrooms.
It is important to let the meat rest for at least 3 minutes after removing it from the heat to allow the juices to redistribute, which ensures the bites remain moist and flavorful when served to your guests.
- Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest
Up next · Part 3 of 3
2 variations · storage & make-ahead · 3 answers · printable card
Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)