Slice the beef sirloin into thin strips against the grain for quicker cooking.
Chop broccoli into small florets, slice the carrot into matchsticks, and thinly slice the red bell pepper. Trim the ends of the snap peas if needed.
In a small bowl, combine grated ginger, minced garlic, soy sauce, and sesame oil to create your stir-fry sauce.
Heat a non-stick skillet or wok over medium-high heat until hot.
Add the sliced beef to the pan and sear for about 2-3 minutes until browned but not fully cooked. Remove the beef and set aside.
In the same skillet, add the broccoli, carrot, red bell pepper, and snap peas. Stir-fry the vegetables for about 3-4 minutes until they become crisp-tender.
Return the seared beef to the skillet and pour the prepared sauce over the mixture. Cook for an additional 2 minutes, stirring constantly, until the beef is cooked through and the flavors meld.
Serve immediately, enjoying the crisp texture of the vegetables with the savory, ginger-sesame infused beef.