Creating Pineapple Tofu is straightforward if you follow these simple steps:

1. Prepare the Tofu: Start by draining the tofu. Press it with a heavy object for at least 15 minutes to eliminate excess moisture.
2. Cut the Tofu: Dice the pressed tofu into bite-sized cubes for even cooking.
3. Coat with Cornstarch: In a bowl, toss the tofu cubes with cornstarch until evenly coated. This will give them a delightful crispiness.
4. Heat the Pan: Pour sesame oil into a large skillet and heat it over medium-high heat.
5. Cook the Tofu: Add the cubed tofu to the skillet. Cook for about 5-7 minutes until golden brown, turning occasionally.
6. Add Vegetables: Once the tofu is crispy, add the sliced onion, bell pepper, garlic, and ginger to the skillet. Sauté for another 3-4 minutes until the vegetables are tender.
7. Incorporate Pineapple: Stir in the chopped pineapple and soy sauce. Cook for an additional 2-3 minutes, allowing the pineapple to warm and release its juices.
8. Season: Taste and adjust seasoning with salt and pepper as needed.
9. Garnish: Remove from heat and sprinkle with sesame seeds and chopped green onions for presentation.
10. Serve: Plate the Pineapple Tofu immediately, either alone or over a bed of rice.

These simple steps ensure that your dish will turn out deliciously every time!