Prepare the protein: Soak soy curls in vegetable broth for 10 minutes, then drain and squeeze out excess liquid. If using tofu, press and slice.
Coat and season: Toss protein with cornstarch, soy sauce, and baking soda. Let it sit for 5 minutes.
Make the sauce: In a bowl, whisk together soy sauce, maple syrup, broth, garlic, ginger, hoisin, and sesame oil.
Sear the protein: Heat oil in a pan over medium-high heat. Cook soy curls or tofu until golden and crispy. Remove from the pan.
Cook the broccoli: Add broccoli to the pan with a splash of water. Cover and steam for 3 minutes until just tender.
Combine everything: Return the protein to the pan. Pour in the sauce and stir to coat.
Thicken the sauce: Stir in the cornstarch slurry. Let it cook until the sauce reaches a glossy, thick consistency.
Serve hot: Plate over rice, sprinkle with sesame seeds, and enjoy.