Start by cutting the pressed tofu into bite-sized cubes. Toss the cubes in cornstarch until evenly coated.
Heat vegetable oil in a large skillet or wok over medium-high heat.
Once the oil is hot, add the tofu cubes and cook for about 5-7 minutes, turning occasionally until golden and crispy on all sides. Remove the tofu from the skillet and set aside.
In the same skillet, add the sliced bell pepper, broccoli florets, and snap peas. Stir-fry the vegetables for about 3-4 minutes until they are vibrant and tender-crisp.
Add minced garlic and ginger to the vegetables, stirring for an additional 1-2 minutes until fragrant.
Return the crispy tofu to the skillet, and pour in the teriyaki sauce. Gently toss everything together, cooking for another 2-3 minutes until heated through and evenly coated in sauce.
Season with salt and pepper to taste, and remove from heat.
Garnish with chopped green onions and sesame seeds before serving.
Notes
For extra flavor, marinate the tofu in teriyaki sauce for 30 minutes before cooking.