This 4-ingredient slow cooker bourbon beef is my go-to when I need dinner handled hours before the evening chaos hits. It’s inspired by the sticky-sweet bourbon beef you’d find at a casual steakhouse, but pared down to just a few pantry staples and the slow cooker doing all the work. Cubed flank steak turns incredibly tender and fibrous, soaking up a glossy, caramelized bourbon glaze that tastes like you fussed all day, even though you basically tossed everything in the pot and walked away.
I like to serve this bourbon beef in big bowls over fluffy white rice or buttery mashed potatoes so all that sticky sauce has something to cling to. Steamed green beans, broccoli, or a simple side salad help balance the richness. If you want to keep it really low-effort, spoon it over microwaveable rice or egg noodles. Leftovers are great tucked into toasted rolls for sandwiches, or piled onto baked potatoes with a little shredded cheese and green onions.
4-Ingredient Slow Cooker Bourbon BeefServings: 4
Ingredients
2 pounds beef flank steak, cut into 1-inch cubes
1 cup bourbon whiskey
1 cup packed brown sugar (light or dark)
1 cup low-sodium beef broth
Directions
Trim any large pieces of excess fat from the flank steak, then cut the steak into roughly 1-inch cubes so they cook evenly and fit nicely on a fork.
Add the cubed flank steak to the bottom of a 4- to 6-quart slow cooker, spreading it into an even layer so the pieces are mostly in a single layer and can soak up the sauce.
In a medium bowl or large measuring cup, whisk together the bourbon, brown sugar, and beef broth until the sugar is mostly dissolved and the mixture looks smooth and uniform.
Pour the bourbon mixture evenly over the cubed beef in the slow cooker, gently stirring or nudging the meat so every piece is coated and submerged as much as possible.
Cover the slow cooker with the lid and cook on LOW for 6 to 8 hours, or on HIGH for 3 to 4 hours, until the beef is very tender and pulls apart easily with a fork.
Once the beef is tender, remove the lid and give everything a gentle stir. If the sauce looks thin, continue cooking UNCOVERED on HIGH for 20 to 30 minutes, stirring once or twice, until the liquid reduces into a dark, sticky, glossy glaze that clings to the meat.
When the sauce has thickened and the beef is coated in a shiny, caramelized glaze, taste a small piece and adjust with a pinch of salt if needed (the broth already adds some salt).
Turn the slow cooker to WARM and let the beef rest for 5 to 10 minutes so the sauce settles and clings even more to the meat. Serve the bourbon beef hot, spooning generous amounts of the sticky sauce over each serving.
Variations & Tips
To keep this truly 4 ingredients, everything is very stripped down, but you can still tweak it a bit. For more savory depth, you can swap up to 1/2 cup of the beef broth with low-sodium soy sauce or add a spoonful of tomato paste (this would technically add ingredients, so think of it as an optional upgrade, not part of the base recipe). If you prefer a slightly less boozy flavor, simmer the bourbon in a small saucepan for 3 to 5 minutes before adding it to the slow cooker to cook off more alcohol up front. For a bit of heat, stir in a pinch of crushed red pepper flakes at the end. This recipe works with other lean, tough cuts like chuck roast or round roast cut into cubes, though they may release a little more fat; you can skim some off the top before reducing the sauce if you like.
Food safety tips: Always start with fresh, properly refrigerated beef and keep it chilled until you are ready to prep. Use a clean cutting board and knife designated for raw meat, and wash your hands and any surfaces or utensils that touch raw beef with hot, soapy water before using them on anything else. Make sure your slow cooker is functioning properly and cook on the recommended LOW or HIGH settings; the internal temperature of the beef should reach at least 145°F for safety, though this recipe goes much higher as it braises for several hours. Do not leave the slow cooker on the “Warm” setting for more than 2 to 3 hours after cooking is complete. Refrigerate leftovers in shallow containers within 2 hours of serving and reheat thoroughly until steaming hot before eating.
