Heat your wok or skillet over high heat until the oil shimmers, signaling it’s hot and ready.
Add the sliced mushrooms to the pan, spreading them out evenly. Let them cook undisturbed for about 2-3 minutes, until they develop a deep golden-brown color and release a toasty aroma.
Stir the mushrooms with your spatula, then add the asparagus pieces. Cook for another 2-3 minutes, stirring frequently, until the asparagus turns bright green and is just tender but still crisp with a satisfying crunch.
Push the vegetables to one side of the pan and add the minced garlic to the empty space. Sauté for 30 seconds, stirring constantly, until fragrant and golden, being careful not to burn it.
Mix the garlic into the vegetables, then pour in soy sauce. Toss everything together, ensuring the vegetables are coated evenly, and cook for another 30 seconds to deepen the flavors.
Remove the pan from heat and drizzle with the toasted sesame oil. If desired, sprinkle chili flakes for extra heat. Toss everything one last time to combine the flavors and finish cooking for about 1 minute.
Serve immediately straight from the pan, garnished with chopped scallions or sesame seeds if you'd like. Enjoy your quick, flavorful stir fry hot and fresh.