In a small bowl, whisk together the soy sauce, oyster sauce, and sesame oil to create the stir-fry sauce. Set aside for later use.

Heat the vegetable oil in a large wok or skillet over medium-high heat until shimmering. Add the minced garlic and grated ginger, cooking for about 30 seconds until highly fragrant.

Add the peeled prawns to the hot wok. Stir-fry for 2 to 3 minutes until they just begin to turn pink and opaque.

Toss in the sliced red bell pepper and snow peas. Continue to stir-fry for another 2 minutes until the vegetables are tender-crisp and brightly colored.

Pour the prepared sauce over the prawns and vegetables. Toss everything together for 1 minute until the sauce coats the ingredients evenly.

Remove the wok from the heat and garnish with sliced green onions. Serve immediately over warm steamed rice or noodles for a quick, satisfying meal.