Dinner · Part 2 of 3: Instructions
Easy Slow Cooker General Tso Beef for Weeknight Dinners Step-by-step instructions

- Prep
- Cook
- Total
- Serves
- 4
Before you start
Before beginning, ensure that the flank steak is sliced into uniform strips, as this promotes even cooking throughout the slow cooker. Have the broccoli florets washed and dried, and ensure the General Tso sauce is at room temperature for easier pouring.
Having all ingredients measured and ready to go before you start makes the assembly process fast and efficient, allowing you to get the slow cooker running in just a few minutes.
Ingredients at a glance (4)
- 1 1/2 lb flank steak, sliced into thin strips
- 2 cups fresh broccoli florets
- 1 tsp crushed red pepper flakes
- 1 cup General Tso sauce, store-bought or made ahead
Instructions
Assembly Phase
- Prepare the IngredientsPlace the thinly sliced flank steak strips into the bottom of the slow cooker insert to ensure even cooking. Scatter the fresh broccoli florets evenly over the top of the beef. Sprinkle the crushed red pepper flakes over the broccoli for a subtle kick.Look for The beef should be spread across the bottom with broccoli layered on top.Tip Ensure the steak is sliced against the grain for maximum tenderness after slow cooking.
At the end of the assembly phase, the slow cooker insert should be layered with the steak at the bottom and broccoli on top. Everything should be neatly arranged without being overstuffed.
Check that the broccoli is evenly distributed so that every portion gets a good amount of vegetables. The red pepper flakes should be visible as a light dusting over the broccoli, indicating they are ready to infuse the dish with heat.
Slow Cooking Phase
- Add Sauce and CookPour the General Tso sauce over the steak and broccoli mixture, ensuring everything is lightly coated. Cover the slow cooker with the lid. Cook on the low heat setting for 4 hours until the beef is tender and cooked through.Look for The sauce should bubble slightly as it warms and coats the ingredients.Tip Do not stir too frequently, as this can break up the broccoli florets.
During the cooking phase, the kitchen should begin to smell savory and aromatic. By the end of the four-hour window, the sauce will have reduced slightly, appearing darker and more concentrated.
The broccoli should be tender but still hold its shape, and the beef should be thoroughly cooked and coated in the glossy sauce. Check that the liquid level is sufficient and that the sauce has not scorched at the edges of the insert.
Final Resting Phase
- Finish and ServeCheck that the beef reaches an internal temperature of 145°F (63°C). Once cooked, turn off the slow cooker and let the beef rest for 5 minutes before serving over warm white rice to allow the juices to redistribute.Look for The beef should be dark, glossy, and tender, while the broccoli remains slightly firm.Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)Tip Serve immediately to maintain the best texture for both the meat and the vegetables.
After the resting phase, the beef should be slightly firmer and perfectly moist. The sauce should have settled into a smooth, thick consistency that coats the meat and vegetables uniformly. Before serving, give the mixture a very gentle stir to ensure the sauce is evenly distributed. Check that the beef is tender and the broccoli is vibrant, confirming the dish is ready for plating over rice.
Common mistakes
A common mistake is overcrowding the slow cooker with too many vegetables, which can lead to excessive liquid and steamed-out flavor. Another frequent error is slicing the steak with the grain rather than against it; slicing against the grain is vital for tender results.
Avoid lifting the lid during the first few hours of cooking, as this releases heat and steam, which significantly increases the time needed to reach the desired tenderness.
How to tell it’s done
The beef is perfectly done when it reaches an internal temperature of 145°F (63°C). At this point, the meat should be very tender and easily pulled apart with a fork. The sauce will have thickened slightly and appear glossy, clinging to the beef and broccoli. Always use a meat thermometer to check the thickest part of the steak strips to ensure it has reached the safe temperature before serving.
- 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)