Dinner · Part 2 of 3: Instructions
Quick Beef and Broccoli Lo Mein Stir Fry Step-by-step instructions

- Prep
- Cook
- Total
- Serves
- 4
Before you start
Preparation is the most important part of successful stir frying. Begin by slicing the beef into thin, uniform strips to ensure even cooking. Wash and cut the broccoli into bite-sized florets.
Have the noodles cooked and drained, and ensure everything is ready to go. Because the cooking process moves very quickly, having all ingredients organized near the stove prevents burning and ensures a smooth workflow from start to finish.
Ingredients at a glance (3)
- 1 lb beef flank steak, thinly sliced
- 2 cups broccoli florets
- 8 oz lo mein noodles
Instructions
Searing the protein
- Sear the beefHeat a large skillet over high heat. Add the sliced beef and sear until browned on all sides. Ensure the beef reaches an internal temperature of 145°F (63°C) and let it rest for at least 3 minutes before combining with other ingredients.Look for The beef should be nicely browned and seared with a caramelized exterior.Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)Tip Slice the beef against the grain to ensure it remains tender after cooking.
The beef should be seared until it develops a dark, caramelized brown crust. The edges should look crisp, and the aroma should be savory and toasted.
Check that the beef is cooked through with an internal temperature of 145°F (63°C) before moving to the next phase to ensure the meat is safe and flavorful.
Adding vegetables and noodles
- Cook vegetables and noodlesAdd the broccoli florets to the skillet with the beef and cook until crisp-tender. Stir in the cooked lo mein noodles, ensuring they are evenly distributed throughout the mixture for consistent flavor.Look for The broccoli should turn bright green and become slightly tender while retaining a crisp texture.Tip Do not overcook the broccoli, as it will continue to steam slightly when the pan is covered.
The broccoli should be bright, vibrant green and tender-crisp. The noodles should be hot and slightly softened. Ensure there is no excess water in the pan from the vegetables before proceeding, as this will dilute the flavor and prevent the natural juices from properly coating the noodles.
Final toss
- Final tossToss everything together using kitchen tongs until every strand of noodle is glossy and thoroughly coated. Ensure the mixture is heated through before serving.Look for The noodles should appear glossy and glistening with steam rising from the pan.Tip Toss quickly to maintain the high heat of the skillet.
The final dish should look glossy and cohesive, with the natural juices clinging to every ingredient. The pan should be fragrant, and the noodles should be evenly coated. Check that the mixture is bubbling and steaming before removing the pan from the heat to serve the meal immediately while piping hot.
Common mistakes
A common mistake is overcrowding the pan, which causes the beef and broccoli to steam instead of sear. To avoid this, cook in batches if necessary or use a very large skillet.
Another error is adding ingredients too slowly, which can cause the pan temperature to drop. Always keep the heat high and ensure the ingredients are ready to be added in quick succession to maintain the best flavor profile.
How to tell it’s done
The beef is done when it is deeply browned and has reached an internal temperature of 145°F (63°C). The broccoli should be bright green, tender, and slightly crisp to the bite.
The noodles should be heated through and glossy. If the beef is gray rather than brown, the heat was likely too low; ensure the pan is smoking hot before adding the meat to achieve the proper texture and flavor.
- 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)