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Dinner · Part 2 of 3: Instructions

Slow Cooker Beef Carbonnade with Speculoos Step-by-step instructions

A close-up of a bowl of rich, dark beef carbonnade with tender beef chunks and thick gravy.
Prep
Cook
Total
Serves
4
Includes 5 min resting

Before you start

Before starting, ensure that all ingredients are prepped and ready for layering. Slice the onions into thin, uniform strips to ensure they soften completely and melt into the sauce. Cut the beef into consistent chunks to promote even cooking.

Have your measuring cups and the slow cooker clean and placed on a flat, heat-resistant surface. Check that the slow cooker has sufficient space for the ingredients and that the power cord is safely positioned away from water sources.

Ingredients at a glance (5)
  • 2 lb beef chuck roast, cut into chunks
  • 3 large yellow onions, sliced
  • 1 cube beef bouillon cube, crumbled
  • 12 oz amber beer
  • 4 pieces speculoos cookies, crushed

Instructions

Layering the Slow Cooker

  1. Layer the Ingredients
    Place the beef chunks into the bottom of the slow cooker. Scatter the sliced onions evenly over the beef. Crumble the beef bouillon cube over the onion layer.
    Look for The beef should be in a single layer if possible at the base.
    Tip Ensure the onions are distributed well to create a moisture barrier.

At the end of this phase, the slow cooker should be filled with layers of beef, onions, and seasonings. The beef sits at the base, topped by the onions and the crumbled bouillon.

The setup is ready for the addition of liquid, which will provide the necessary moisture to create the flavorful braising environment. Confirm that the ingredients are stacked neatly and that the bouillon is evenly distributed to ensure consistent seasoning throughout the final dish.

Braising the Meat

  1. Add Liquid and Cook
    Pour the amber beer over the layered ingredients in the slow cooker. Cover and cook on low for 8 hours until the beef reaches 145°F (63°C). Once cooked, let the meat rest for at least 3 minutes before serving.
    Look for The liquid should just partially submerge the beef and onions.
    Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
    Tip Avoid opening the lid during cooking to maintain heat consistency.

During this phase, the beef undergoes a slow transformation. The beer and the juices released by the onions create a fragrant, bubbling environment. At the end of the cooking time, the kitchen should smell savory and slightly sweet. The meat will be tender and the liquid reduced. Check that the liquid level is sufficient and that the beef is fully submerged to prevent any parts from drying out during the extended cooking process.

Finishing and Thickening

  1. Thicken and Serve
    Stir in the crushed speculoos cookies to thicken the gravy and add flavor. Allow the dish to rest for 5 minutes before serving hot on a plate.
    Look for The sauce will turn glossy and thicken significantly once cookies are added.
    Tip Let the meat rest to ensure the juices redistribute properly.

The final phase involves incorporating the crushed speculoos cookies to perfect the sauce. As they are stirred in, watch for the gravy to transition from a thin liquid to a thick, glossy, and rich sauce.

The aroma will become more aromatic and spiced. Once the cookies have fully dissolved and the gravy has thickened to the desired consistency, the dish is ready to be plated and served hot, showcasing the deep, complex flavors of the carbonnade.

Common mistakes

A common mistake is cutting the beef chunks too small, which can cause them to disintegrate during the long cooking time; aim for 1.5-inch cubes.

Another error is adding the cookie crumbs too early; always stir them in at the very end to ensure they thicken the sauce effectively without burning or losing their texture. Finally, ensure the onions are not crowded too tightly, as they need to be in contact with the liquid to caramelize and soften properly.

How to tell it’s done

The beef is perfectly cooked when it is fork-tender and pulls apart with minimal resistance. Use a meat thermometer to ensure the thickest piece of beef reaches an internal temperature of at least 145°F (63°C). The sauce should be dark, rich, and slightly thickened, coating the back of a spoon. The onions should be completely translucent and soft, having almost entirely integrated into the gravy during the long cooking cycle.

  • Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest

Coming up in Part 3: common questions

  • Can this be made without alcohol?
  • Why does the sauce need to be thickened at the end?
  • Is it possible to overcook the beef in a slow cooker?

Also in Part 3: variations (Vegetable Addition, Herb Infusion), storage and make-ahead, and the printable recipe card.

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)