Heat oil in a large skillet or wok over medium-high heat. Add tofu and cook until golden on all sides. Remove and set aside.
In the same pan, toss in garlic and ginger. Sauté 30–60 seconds until fragrant—don’t burn them, we’ve all wrecked a pan here.
Throw in the vegetables. Stir-fry for 4–5 minutes until they’re crisp-tender and seductive with color.
Return the tofu to the pan. In a small bowl, whisk soy sauce, maple syrup, rice vinegar, and chili flakes. Pour over the veggies and tofu.
Add the cornstarch slurry to the pan. Stir constantly until the sauce thickens and coats everything beautifully (about 1–2 minutes).
Taste and adjust if needed. If it’s too salty, splash a tiny bit of water or lime juice. If it needs more zing, add a splash of soy sauce.
Remove from heat. Garnish with sesame seeds and green onions. Serve over rice, quinoa, or noodles.