Cook the brown rice: Rinse 1 cup dry brown rice under cold water until the water runs clear (this removes surface starch and prevents clumping). Combine the rinsed rice with 2 1/4 cups water and a pinch of salt in a medium saucepan. Bring to a boil, then reduce to low, cover, and simmer 40 minutes or until water is absorbed. Let rest, covered, for 10 minutes. Why: Low-and-slow steaming yields tender, separate grains and develops the rice's nutty flavor — essential as the neutral bed for the stir-fry.

Press and cube the tofu: While the rice cooks, drain the 12 oz block of firm tofu and press it for 15 minutes between paper towels (or a clean kitchen towel) with a weight on top (a skillet or cans). Pressing removes excess water so the tofu crisps instead of steaming when cooked. After pressing, cut the tofu into 3/4–1-inch cubes and toss them gently with 1 tablespoon cornstarch and a pinch of salt — the cornstarch gives an ultra-crispy crust when fried.

Make the sauce: In a small bowl whisk together 2 tbsp soy sauce, 1 tbsp rice vinegar, 1 tsp brown sugar (or honey), the minced garlic (2 cloves), and minced ginger (1 tbsp). Taste and adjust — the balance should be salty (soy), bright (vinegar), and mildly sweet. Why: Mixing the sauce ahead ensures even seasoning and lets the sugar dissolve, so it will glaze the vegetables and tofu quickly when added to the hot pan.

Crisp the tofu: Heat a large nonstick skillet or well-seasoned cast-iron pan over medium-high heat and add 2 tbsp neutral oil. When the oil is shimmering but not smoking, spread the tofu cubes in a single layer without crowding (work in two batches if needed). Let the tofu cook undisturbed for 3–4 minutes to develop a deep golden crust, then flip and brown other sides (another 3–4 minutes). Why: Searing without moving builds a Maillard crust that provides contrast to the soft interior — and cornstarch helps form a thin, crunchy shell.

Remove tofu and reserve: Transfer the browned tofu to a plate lined with a paper towel. Why: Removing tofu prevents it from overcooking and keeps it crisp while you cook the vegetables; it will return to the pan near the end to finish with the sauce.

Stir-fry the vegetables: In the same pan over high heat add a small splash of oil if needed (about 1 tsp). Add the mixed vegetables (2 cups: broccoli, carrot, bell pepper) and a pinch of salt. Stir often, letting pieces contact the hot pan for 20–30 seconds at a time — about 4–6 minutes total — until broccoli is bright green and tender-crisp and carrots begin to soften. Why: High heat cooks vegetables quickly, preserving color, snap, and nutrients; cooking to tender-crisp prevents mushy veggies that lose visual and textural appeal.

Add aromatics and sauce: Reduce the heat to medium-high, push the vegetables to the side, and add the prepared soy-ginger-garlic sauce to the pan. Let it sizzle for 10–15 seconds to bloom the aromatics and slightly reduce, then toss everything together. Why: Heating the sauce briefly concentrates the flavors and allows the garlic and ginger to mellow and perfume the oil, creating a cohesive glaze for the veggies.

Return the tofu and finish: Add the seared tofu back to the pan and drizzle 1 tsp toasted sesame oil over everything. Toss gently so the sauce coats the tofu and vegetables evenly; let the mixture cook for another 1–2 minutes so the sauce thickens and clings. Taste and adjust seasoning with a splash more soy sauce, a pinch of salt, or a few red pepper flakes. Why: Reuniting tofu and vegetables at the end keeps the tofu crisp while ensuring it's fully flavored by the sauce.

Plate and garnish: Fluff the brown rice with a fork and divide among 3 bowls. Spoon the tofu and vegetable stir-fry over the rice. Sprinkle with sliced scallions and an optional pinch of sesame seeds or red pepper flakes. Why: Serving rice separately keeps textures distinct and allows each diner to combine as they eat; fresh scallions add brightness as a finishing note.

Serve immediately: Serve hot so the tofu stays crisp and the sauce is glossy. Leftovers: Store cooled leftovers in an airtight container in the refrigerator for up to 3 days; reheat in a skillet over medium heat to revive texture (microwaving will soften the tofu).