Press the tofu for 15 minutes to remove excess moisture, then cut into 1-inch cubes.
In a bowl, toss the tofu cubes with nutritional yeast, sea salt, and black pepper until evenly coated.
Heat sesame oil in a large non-stick skillet over medium-high heat.
Add the tofu to the pan and sear for 3-4 minutes per side until the edges are golden and crispy.
While tofu cooks, whisk together tamari, rice vinegar, gochujang, grated ginger, and minced garlic in a small bowl.
Add the shelled edamame and baby spinach to the skillet, sautéing for 2 minutes until the spinach is wilted.
Pour the chili sauce over the tofu and vegetables, tossing gently to coat everything in the glossy glaze.
Serve immediately while the tofu is hot and the sauce is bubbling.