Cook the brown rice according to package instructions, then spread it out on a baking sheet to cool. Using leftover brown rice is recommended.
Steam the peas until bright green and tender, about 2-3 minutes. Drain and set aside.
Chop the Persian cucumber, slice the green onions, and chop the mint and cilantro into bite-sized pieces.
In a small bowl, whisk together gochujang, sesame oil, soy sauce, honey, tahini, lime juice, and water until smooth. Adjust the consistency with more water if necessary.
Combine the cooled brown rice, steamed peas, chopped cucumber, green onions, diced avocado, mint, and cilantro in a large mixing bowl.
Pour the dressing over the salad and toss gently to combine, ensuring everything is evenly coated. Taste and adjust seasoning if needed.
Serve immediately or chill for 30 minutes for enhanced flavor. Enjoy as a main dish or a side.